Contract

Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Amendment Flag Amendment Flag Amendment Description Amendment Description Current Fiscal Year End Date Current Fiscal Year End Date Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Statement Of Financial Position [Abstract] Statement of Financial Position [Abstract] Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash Cash Cash, Beginning Balance Cash, Ending Balance Restricted Cash and Cash Equivalents, Current Pledged bank deposits Accounts Receivable, Gross, Current Bills receivable Accounts Receivable, Net, Current Balance of accounts receivable Accounts receivable Accounts Receivable, Net, Current, Total Inventory, Net Inventories Total Advances On Inventory Purchases Prepayments to suppliers Income Taxes Receivable, Current Income tax receivable Value Added Tax Receivable, Current Consumption tax refund receivable Due From Related Parties, Current Amounts due from related parties Due from Related Parties, Current, Total Other Assets, Current Other current assets Other current assets Deferred Tax Assets, Net, Current Deferred income tax assets Deferred Tax Assets, Net, Current, Total Deferred Tax Assets, Net, Current, Beginning Balance Deferred Tax Assets, Net, Current, Ending Balance Assets, Current Total current assets Total current assets Property, Plant and Equipment, Net Property, plant and equipment, net Property, plant and equipment, Net Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Ending Balance Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Intangibles assets, net Finite-Lived Contractual Rights, Gross Land use rights Land use rights, Total Prepaid Expense, Noncurrent VAT recoverable included in non-current assets VAT recoverable Prepaid Expense, Noncurrent, Total Assets Total assets Total assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities, Current [Abstract] Current liabilities: Short-Term Bank Loans and Notes Payable Bank borrowings-secured/guaranteed Short-term bank borrowings Accrued Liabilities, Current Bills payable Accrued Liabilities, Current, Total Loans Payable To Bank, Current Loan from China Construction Bank Current portion of long-term bank borrowings Less: current portion Less: current portion Accounts Payable, Current Accounts payable Accounts Payable, Current, Total Deferred Revenue, Current Advances from customers Deferred Revenue, Current, Total Accounts Payable and Other Accrued Liabilities, Current Accrued expenses and other payables Accrued expenses and other payables Taxes Payable, Current Income taxes payable Taxes Payable, Current, Total Dividends Payable Dividends payable Interest and Dividends Payable, Current, Total Due To Related Parties, Current Amount due to related parties (g) Amounts due to related parties Due to Related Parties, Current, Total Liabilities, Current Total current liabilities Total current liabilities Loans Payable To Bank, Noncurrent Loans payable to bank, non-current Loans payable to bank, non-current Liabilities Total liabilities Total liabilities Series B Convertible Preferred Stock: Par Value: $0.001; Authorized: 8,000,000 Shares 6% Cumulative Dividend With Liquidation Preference Over Common Stock Issued and Outstanding: 5,333,340shares, Liquidation Preference Of 20,000,000 Series B convertible preferred stock Series B convertible preferred stock: Par value: $0.001; Authorized: 8,000,000 shares6% cumulative dividend for one year from insurance, with liquidation preference over common stock, Issued and outstanding:5,333,340 shares in June 30, 2012, in 2011 and 5,400,010 in 2010,Liquidation preference of $20,000,000 in June 30, 2012, in 31 Dec. 2011 and 20,250,000 in 2010. Temporary Equity, Carrying Amount, Total Temporary Equity, Carrying Amount, Beginning Balance Temporary Equity, Carrying Amount, Ending Balance Commitments and Contingencies Commitments and contingencies Stockholders Equity, Including Portion Attributable To Noncontrolling Interest [Abstract] Stockholders’ equity: Common Stock, Value, Issued Common stock par value:$0.001; Authorized: 100,000,000 shares; Issued and outstanding: 57,646,160 shares as at June 30, 2012 and December 31, 2011 and 57,577,840 shares in 2010 Common Stock, Value, Issued, Total Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Ending Balance Additional Paid In Capital Additional paid-in capital Additional paid-in capital Additional Paid in Capital, Beginning Balance Additional Paid in Capital, Ending Balance Other Additional Capital Statutory reserve Accumulated Other Comprehensive Income (Loss), Net Of Tax Accumulated other comprehensive income Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance Retained Earnings (Accumulated Deficit) Retained earnings Retained earnings (deficit) Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Stockholders' Equity, Including Portion Attributable To Noncontrolling Interest Total stockholders’ equity Total stockholders’ equity Balance Ending Balance Liabilities and Equity Total liabilities and stockholders' equity Total liabilities and stockholders' equity Temporary Equity, Par Or Stated Value Per Share Series B convertible preferred stock, par value Temporary Equity, Shares Authorized Series B convertible preferred stock, shares authorized Temporary Equity Cumulative Dividend With Liquidation Preference Over Common Stock Series B convertible preferred stock, cumulative dividend Temporary Equity cumulative dividend with liquidation preference over common stock. Temporary Equity, Shares Issued Series B convertible preferred stock, share issued Temporary Equity, Shares Outstanding Series B convertible preferred stock, shares oustanding Temporary Equity, Liquidation Preference Series B convertible preferred stock, shares liquidation preference Common Stock, Par Or Stated Value Per Share Par value of issued common stock Common stock, par value Common Stock, Shares Authorized Authorized common stock Common stock, shares authorized Common Stock, Shares, Issued Common stock share issued by the company upon the completion of the Series A Private Placement Common stock, shares issued Common Stock, Shares, Issued, Total Common Stock, Shares, Outstanding Common stock, shares outstanding Common Stock, Shares, Outstanding, Beginning Balance Common Stock, Shares, Outstanding, Ending Balance Income Statement [Abstract] Income Statement [Abstract] Revenues [Abstract] Sales Oil and Gas Sales Revenue Third parties/External parties Revenue From Related Parties Sales of products Related parties Revenues Total Sales Total Sales Cost Of Revenue [Abstract] Cost of sales Cost Of Goods Sold Third parties/External Parties Cost of Goods Sold, Total Related Party Costs Related parties Cost Of Revenue Cost of sales Total Cost of sales Gross Profit Gross profit (loss) Gross profit Operating Expenses [Abstract] Operating expenses Selling Expense Selling expenses General and Administrative Expenses General and administrative expenses General and Administrative Expense, Total General and administrative expenses Operating Expenses Total operating expenses Total operating expenses Operating Income (Loss) Income (loss) from operations Income (loss) from operations Nonoperating Income (Expense) [Abstract] Other income (expense): Investment Income, Interest Interest income Interest Expense Interest expense Interest Expense, Debt, Total Interest expense Foreign Currency Transaction Gain (Loss), Before Tax Foreign exchange (loss) gain, net Other Nonoperating Expense Liquidated damages expense Liquidated damages expense Other Nonoperating Income (Expense) Other income (expense), net Other Nonoperating Income (Expense), Total Nonoperating Income (Expense) Total other expense, net Total other expense (income), net Income (Loss) From Continuing Operations Before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Total income before income taxes (Loss) income before income taxes Income (loss) before income taxes Loss before income taxes Income Tax Expense (Benefit) Actual income tax expense Income tax expense Actual (Total) income tax expense Net Income (Loss), Including Portion Attributable To Noncontrolling Interest Net income (loss) attributable to Keyuan Petrochemicals, Inc. stockholders Net income Net income (loss) attributable to Keyuan Petrochemicals Inc. stockholders Net income (loss) attributable to Keyuan Petrochemicals Inc. stockholders Net loss Dividends To Series Convertible Preferred Stockholders Dividends to Series A convertible Preferred stockholders Dividends to Series A convertible preferred stockholders. Convertible Preferred Stock Converted To Other Securities, Series B Less: Dividend attributable to preferred stockholders Dividends to Series B convertible preferred stockholders Value of convertible preferred stock that was converted to other securities. Dividends to Series B convertible preferred stockholders Net Income (Loss) Available To Common Stockholders, Basic Net income (loss) attributable to Keyuan Petrochemicals Inc. common stockholders Net income (loss) attributable to Keyuan Petrochemicals Inc. common stockholders Other Comprehensive Income (Loss), Net Of Tax [Abstract] Other comprehensive income Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net Of Tax Other comprehensive income - Foreign currency translation gain Foreign currency translation adjustment Comprehensive Income (Loss), Net Of Tax, Attributable To Parent Comprehensive income Comprehensive Income (loss) Earnings Per Share [Abstract] Earnings (loss) per share: Earnings Per Share, Basic Basic net income (loss) per share - Basic Earnings Per Share, Basic, Total Earnings Per Share, Diluted Diluted net income (loss) per share - Diluted Earnings Per Share, Diluted, Total Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Weighted average number of shares of common stock used in calculation Weighted Average Number Of Shares Outstanding, Basic Weighted average common shares (Denominator for basic income per share) Basic Weighted Average Number of Shares Outstanding, Basic, Total Weighted Average Number Of Shares Outstanding, Diluted Diluted Weighted Average Number of Shares Outstanding, Diluted, Total Statement Of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Series M Convertible Preferred Stock [Member] Series M Convertible Preferred Stock Series M Convertible Preferred Stock [Member] Series M convertible preferred stock. Common Stock [Member] Common Stock [Member] Common Stock Additional Paid-In Capital [Member] Additional Paid-In Capital Statutory Reserve [Member] Statutory Reserve Statutory reserve. Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Other Comprehensive Income Retained Earnings [Member] Retained Earnings (Deficit) Comprehensive Income [Member] Comprehensive Income (Loss) Statement [Line Items] Statement [Line Items] Shares, Outstanding, Beginning Balance Balance, (Shares) Ending Balance (Shares) Shares, Outstanding, Beginning Balance Stockholders' Equity, Other Effect of reverse recapitalization Stockholders' Equity, Other Shares Effect of reverse recapitalization (Shares) Stock Repurchased and Retired During Period, Value Repurchase of common stock Repurchase and cancellation of Common Stock Stock Repurchased and Retired During Period, Shares Repurchase and cancellation of Common Stock (Shares) Dividends, Preferred Stock Fixed dividend for series A Convertible preferred stockholders Fixed Dividends For Series B Preferred Stock Fixed dividend for series B Convertible preferred stockholders Equity impact of aggregate cash, stock, and paid-in-kind dividends declared for preferred shareholders during the period. Stock Issued During Period, Value, Conversion Of Units Conversion of series A convertible preferred stock into common stock Stock Issued During Period, Shares, Conversion Of Units Conversion of series A convertible preferred stock into common stock Conversion of series A convertible preferred stock into common stock (Shares) Stock Issued During Period, Value, Conversion Of Convertible Securities Conversion of series M convertible preferred stock into common stock Stock Issued During Period, Shares, Conversion Of Convertible Securities Conversion of series M convertible preferred stock into common stock Conversion of series M convertible preferred stock into common stock (Shares) Stock Issued During Period, Value, New Issues Issuance of common stock on April 22, 2010 and May 18, 2010 Net of issuance costs of $221,661 Stock Issued During Period, Shares, New Issues Issuance of common stock on April 22, 2010 and May 18, 2010 Net of issuance costs of $221,661 (Shares) Adjustments To Additional Paid In Capital, Warrant Issued Issuance of series A and series B Warrants, net of issuance costs of $45,584 Adjustments To Additional Paid In Capital Warrant Issued Of Series C and Series D Issuance of series C and series D Warrants, net of issuance costs of $170,739 Increase in additional paid in capital due to warrants issued of series C and series D during the period. Includes also the proceeds of debt securities issued with detachable stock purchase warrants that are allocable to the warrants. These warrants qualify for equity classification and provide the holder with a right to purchase stock from the entity. Adjustments To Additional Paid In Capital Warrant Issued To Placement Agent In Connection With Series Private Placement Issuance of warrants to placement agent in connection with series A Private placement Increase in additional paid in capital due to warrants issued to placement agent in connection with series A private placement during the period. Adjustments To Additional Paid In Capital Warrant Issued To Placement Agent In Connection With Series B Private Placement Issuance of warrants to placement agent in connection with series B Private placement Increase in additional paid in capital due to warrants issued to placement agent in connection with series B private placement. Dividends, Common Stock Dividend declared for common stock Warrants Exercise Series Value Exercise of series A warrants Warrants exercise series A value. Warrants Exercise Series Shares Exercise of series A warrants (Shares) Number of shares exercised of series A warrants. Warrants Exercise Series B Value Exercise of series B warrants Value of warrants exercised of series B. Warrants Exercise Series B Shares Exercise of series B warrants (Shares) Number of shares exercised of series B warrants. Stock Issued During Period, Value, Other Series B conversion Stock Issued During Period, Shares, Other Series B conversion (Shares) Adjustments To Additional Paid In Capital, Share-Based Compensation, Stock Options, Requisite Service Period Recognition Share based compensation Adjustments To Additional Paid In Capital, Other Capital contribution by the stockholders Capital contribution from stockholders Statutory Reserves Value Statutory Reserves The increase (decrease) in statutory reserve during the period. Issuance Costs Of Issued Common Stock Issuance costs of issued common stock Issuance costs of issued common stock shares. Issuance Costs Of Warrants Issued Of Seriesa and Series B Issuance costs of warrants issued of Series A and Series B Issuance costs of warrants issued of series A and Series B. Issuance Costs Of Warrants Issued Of Series C and Series D Issuance costs of warrants issued of Series C and Series D Issuance costs of warrants issued of series C and Series D. Statement Of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Cash Flows From Operating Activities: Cash flows from operating activities: Adjustments To Reconcile Net Income To Net Cash Provided By (Used In) Operating Activities: Adjustments to reconcile net income to net cash (Used in) provided by operating activities: Liquidated Damages Related To Operations Liquidated damages Liquidated damages related to operations. Liquidated damages Gain (Loss) On Disposition Of Property Loss on disposal of property and equipment Gain (Loss) on Disposition of Property, Total Loss on disposal of property, plant and equipment Depreciation Depreciation Depreciation Amortization Amortization Amortization, Total Other Depreciation and Amortization Amortization expense related to land use rights Land use rights amortization Deferred Income Tax Expense (Benefit), Total Deferred income tax expense Share-Based Compensation Expense Share-based compensation expense Share-based Compensation, Total Increase (Decrease) In Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) In Accounts and Other Receivables Bills receivable Bills receivable Increase (Decrease) In Accounts Receivable Account receivable Accounts receivable Increase (Decrease) In Inventories Inventories Increase (Decrease) in Inventories, Total Inventories Increase (Decrease) In Prepaid Expense Prepayments to suppliers Prepayments to suppliers Increase (Decrease) In Income Taxes Receivable Consumption tax refund receivable Consumption tax refund receivable Other Current Assets Decrease in other assets Other current assets Other current assets Accounts Payable Decrease in trade payables Accounts payable Increase (Decrease) In Deferred Revenue Advances from customers Increase (Decrease) In Income Taxes Payable Income taxes payable Increase (Decrease) In Other Accounts Payable and Accrued Liabilities Accrued expenses and other payables Net Cash Provided By (Used In) Operating Activities, Total Net cash provided by (used in) operating activities Net cash (used in) provided by operating activities Cash Flows From Investing Activities: Cash flows from investing activities: Payments To Acquire Intangible Assets Purchase of land use rights Purchase of land use rights Proceeds From Sale Of Property, Plant, and Equipment Proceeds from disposal of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment, Total Payments To Acquire Property, Plant, and Equipment Purchase of property, plant and equipment Payments to Acquire Property, Plant, and Equipment, Total Purchase of property, plant and equipment, Net Cash Provided By (Used In) Investing Activities, Total Net cash used in investing activities Net cash used in investing activities Cash Flows From Financing Activities: Cash flows from financing activities: Proceeds From (Repayments Of) Restricted Cash, Financing Activities Pledged bank deposits used for bank borrowings Proceeds From Short-Term Debt Proceeds from short-term bank borrowings Proceeds from Short-term Debt, Total Repayments Of Short-Term Debt Repayment of short-term bank borrowings Repayments of Short-term Debt, Total Repayment of short-term bank borrowings Proceeds From Other Short-Term Debt Proceeds from bills payable Proceeds from bills payable Repayments Of Other Short-Term Debt Repayment of bills payable Repayment of bills payable Proceeds From Bank Debt Proceeds from bank notes Repayments Of Bank Debt Repayment of bank notes Repayment of bank notes Repayments Of Long-Term Debt Repayments of long-term bank borrowings Repayments of Long-term Debt, Total Repayments of long-term bank borrowings Proceeds From Short-Term Bank Borrowings Short-term financing from related parties The cash inflow from a short-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates. Repayment Of Short-Term Bank Borrowings Short-term financing to related parties The cash outflow for the payment of a short-term borrowing made from a related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Payments for Advances from Affiliates. Short-term financing to related parties Repayments Of Related Party Debt Repayment to Ningbo Litong Repayments of Related Party Debt Short Term Financing To From Company Short-term financing to/from Litong (Note24) The net cash inflow or outflow from the proceeds and repayments made on the short-term borrowing from related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and such forth. Alternate caption: Proceeds from (Payments for) Advances from Affiliates. Proceeds From Warrant Exercises Additional paid in capital Proceeds from warrant exercises Proceeds From Issuance Of Private Placement Proceeds from Series A Private Placement, net Proceeds from Series A Private Placement, net Proceeds From Issuance Of Private Placement Series B Proceeds from Series B Private Placement, net The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. Dividends Paid Dividends paid Payments of Dividends, Total Dividend paid Net Cash Provided By (Used In) Financing Activities, Total Net cash provided by financing activities Net cash provided by financing activities Effect Of Exchange Rate On Cash and Cash Equivalents Effect of foreign currency exchange rate changes on cash Effect of Exchange Rate on Cash and Cash Equivalents, Total Cash and Cash Equivalents, Period Increase (Decrease), Total Net increase in cash Net increase (decrease) in cash Cash At Beginning Of Period Cash and cash equivalents Cash and cash equivalents Cash at beginning of year Cash at end of year Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information: Income Taxes Paid Income taxes paid Interest Paid Interest paid, net of capitalized interest Noncash Investing and Financing Items [Abstract] Non-cash investing and financing activities: Payable For Purchase Of Property, Plant and Equipment Payable for purchase of property, plant and equipment (net of VAT) Payable for purchase of property, plant and equipment in a non-cash financing activity. Reclassification Of Input Vat From Property Plant and Equipment To Other Current Assets Reclassification of input VAT from property, plant and equipment to other current assets Fair value of reclassification of input VAT from property, plant and equipment toother current assets in noncash financing and investing activities. Organization, Consolidation and Presentation Of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation Of Financial Statements Disclosure and Significant Accounting Policies [Text Block] ORGANIZATION AND DESCRIPTION OF BUSINESS Business Description and Basis Of Presentation [Text Block] BASIS OF PRESENTATION Accounting Policies [Abstract] Accounting Policies [Abstract] Significant Accounting Policies [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents Disclosure [Text Block] CASH Receivables [Abstract] Receivables [Abstract] Loans, Notes, Trade and Other Receivables Disclosure [Text Block] ACCOUNTS RECEIVABLE Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Inventory Disclosure [Text Block] INVENTORIES Advance Payments [Abstract] Advance Payments [Abstract] Advance Payments [Text Block] PREPAYMENTS TO SUPPLIERS Disclosure of advanced payments to vendors for purchases of raw materials. Consumption Tax Refund Receivable [Abstract] Consumption Tax Refund Receivable [Abstract] Consumption Tax Refund Receivable [Text Block] CONSUMPTION TAX REFUND RECEIVABLE Disclosure of consumption tax refund receivable. Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Other Current Assets [Text Block] OTHER CURRRENT ASSETS Property, Plant and Equipment [Abstract] Property, Plant and Equipment Property, Plant and Equipment Disclosure [Text Block] PROPERTY, PLANT AND EQUIPMENT Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Text Block] INTANGIBLE ASSETS Land Use Rights [Abstract] Land Use Rights [Abstract] Land Use Rights [Text Block] LAND USE RIGHTS Disclosure of land use rights. Short-Term Debt [Abstract] Short-term Debt [Abstract] Short-Term Debt [Text Block] SHORT-TERM BANK BORROWINGS Long-Term Debt and Capital Lease Obligations [Abstract] Long-term Debt and Capital Lease Obligations [Abstract] Long-Term Debt [Text Block] LONG-TERM BANK BORROWINGS Customer Advances and Deposits, Current [Abstract] Customer Advances and Deposits, Current [Abstract] Advances From Customers [Text Block] ADVANCES FROM CUSTOMERS Disclosure of advances from customers. Accounts Payable and Accrued Liabilities [Abstract] Accounts Payable and Accrued Liabilities [Abstract] Accounts Payable and Accrued Liabilities Disclosure [Text Block] ACCRUED EXPENSES AND OTHER PAYABLES Equity [Abstract] Equity [Abstract] Stockholders Equity Note Disclosure [Text Block] STOCKHOLDERS’ EQUITY AND RELATED FINANCING AGREEMENTS Common Stock and Capital Contributions [Abstract] Common Stock and Capital Contributions [Abstract] Common Stock and Capital Contributions [Text Block] COMMON STOCK AND CAPITAL CONTRIBUTION The entire disclosure for common stock and capital contribution. Common Stock Purchase Warrants [Abstract] Common Stock Purchase Warrants [Abstract] Common Stock Purchase Warrants [Text Block] COMMON STOCK PURCHASE WARRANTS The entire disclosure for common stock purchase warrants. Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Shareholders Equity and Share-Based Payments [Text Block] SHARE-BASED PAYMENTS Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] INCOME TAXES Statutory Reserves [Abstract] Statutory reserves. Statutory Reserves [Abstract] Statutory Accounting Practices Disclosure [Table Text Block] STATUTORY RESERVES Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] CONTINGENCY Earnings Per Share [Text Block] EARNINGS (LOSS) PER SHARE Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] FAIR VALUE MEASUREMENTS Significant Concentrations and Risks [Abstract] Significant Concentrations and Risks [Abstract] Concentration Risk Disclosure [Text Block] SIGNIFICANT CONCENTRATIONS AND RISKS Related Party Transactions [Abstract] Related Party Transactions [Abstract] Related Party Transactions Disclosure [Text Block] RELATED PARTY TRANSACTIONS AND RELATIONSHIPS AND TRANSACTIONS WITH CERTAIN OTHER PARTIES Subsequent Events [Abstract] Subsequent Events [Abstract] Subsequent Events [Text Block] SUBSEQUENT EVENTS Condensed Financial Information Of Parent Company Only Disclosure [Abstract] Condensed Financial Information of Parent Company Only Disclosure [Abstract] Condensed Financial Information Of Parent Company Only Disclosure [Text Block] KEYUAN PETROCHEMICALS, INC. (PARENT COMPANY) Consolidation, Policy [Policy Text Block] Principles of consolidation and basis of presentation Use Of Estimates, Policy [Policy Text Block] Use of estimates Foreign Currency Transactions and Translations Policy [Policy Text Block] Foreign currency transactions and translation Cash and Cash Equivalents, Policy [Policy Text Block] Cash Pledged Bank Deposits [Policy Text Block] Pledged bank deposits Pledged bank deposits. Inventory, Policy [Policy Text Block] Inventories Property, Plant and Equipment, Policy [Policy Text Block] Property, plant and equipment Impairment Or Disposal Of Long-Lived Assets, Policy [Policy Text Block] Long-Lived Assets Land Use Rights [Policy Text Block] Land use rights Land use rights. Bills Receivable and Bills Payable [Policy Text Block] Bills receivable and Bills payable Bills receivable and Bills payable. Revenue Recognition, Policy [Policy Text Block] Revenue recognition Share-Based Compensation, Option and Incentive Plans Policy [Policy Text Block] Share-based compensation Postemployment Benefit Plans, Policy [Policy Text Block] Employee benefit plans Income Tax, Policy [Policy Text Block] Income taxes Fair Value Measurement, Policy [Policy Text Block] Fair value measurements Earnings Per Share, Policy [Policy Text Block] Earnings (Loss) per share Segment Reporting, Policy [Policy Text Block] Segment reporting Commitments and Contingencies, Policy [Policy Text Block] Contingencies New Accounting Pronouncements, Policy [Policy Text Block] Recent accounting pronouncements Summary Of Estimated Useful Lives Of Property, Plant and Equipment [Table Text Block] Summary of estimated useful lives of property, plant and equipment Summary of estimated useful lives of property, plant and equipment. Schedule Of Inventory, Current [Table Text Block] Schedule of Inventory Schedule Of Other Current Assets [Table Text Block] Other current assets Property, Plant and Equipment [Table Text Block] Summary of property, plant and equipment Depreciation Expense On Property, Plant and Equipment [Table Text Block] Depreciation expense on property, plant and equipment Depreciation expense on property, plant and equipment. Schedule Of Finite-Lived Intangible Assets [Table Text Block] Summary of intangible assets Land Use Rights [Table Text Block] Land Use Rights Land Use Rights Land use rights. Schedule Of Short-Term Debt [Table Text Block] Summary of short-term bank borrowings Schedule Of Long-Term Debt Instruments [Table Text Block] Long-term Debt Schedule Of Accounts Payable and Accrued Liabilities [Table Text Block] Accrued expenses and other payables Proceeds From Issuance Of Private Placements [Table Text Block] Proceeds from issuance of private placements Proceeds from issuance of private placements. Fair Value Assumptions [Table Text Block] Fair Value Assumptions Fair Value Assumptions. Summary Of Effective Conversion Prices and Estimated Fair Values [Table Text Block] Summary of effective conversion prices and estimated fair values Summary of effective conversion prices and estimated fair values. Schedule Of Warrants Issued To Purchase Companys Common Stock [Table Text Block] Schedule of warrants issued to purchase the Company's common stock The tabular disclosure for schedule of warrants issued to purchase the Company's common stock. Schedule Of Share-Based Compensation Arrangements By Share-Based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Option Indexed To Issuer'S Equity, Type [Axis] Option Indexed to Issuer's Equity, Type [Axis] Option Indexed To Issuer'S Equity, Type [Domain] Option Indexed to Issuer's Equity, Type [Domain] Non Employee Stock Option Grants [Member] Non employee stock option grants [Member] Non employee stock option grants. Share-Based Compensation Arrangement By Share-Based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Schedule Of Share-Based Compensation, Stock Options, Activity [Table Text Block] Summary of the share options granted and the activity Non Vested Stock Options [Table Text Block] Information relating to non-vested stock options Non-vested stock options. Schedule Of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Summary of grant-date fair value of the stock options granted based on the assumptions Schedule Of Income Before Income Tax, Domestic and Foreign [Table Text Block] Components of income (loss) before income tax expense (benfit) by jurisdiction Schedule Of Components Of Income Tax Expense (Benefit) [Table Text Block] Group’s income tax expense Schedule Of Effective Income Tax Rate Reconciliation [Table Text Block] Reconciliation between income tax expense (benefit) and the amounts computed by applying the PRC statutory income tax rate Schedule Of Deferred Tax Assets and Liabilities [Table Text Block] Income tax effects of temporary differences Schedule Of Net Operating Loss Deffered Tax Assets [Table Text Block] Net operating loss deffered tax assets Schedule of net operating loss deffered tax assets. Schedule Of Earnings Per Share, Basic and Diluted [Table Text Block] Computation of basic net income per share: Schedules Of Concentration Of Risk, By Risk Factor [Table Text Block] Sales to the major customers as cotributed to Group’s total annual net revenue Schedule Of Related Party Transactions [Table Text Block] Related Party Transactions, Relationships Related Party Transactions Amount Outstanding [Table Text Block] Related party transactions and amounts outstanding with the related parties Related Party Transactions, Amount Outstanding. Related Party Transaction Guarantees For Bank Loans [Table Text Block] Guarantees for Bank Loans Related party transaction guarantees for bank loans. Related Party Transactions Short-Term Financing Transactions [Table Text Block] Short-term financing transactions with related parties Related Party Transactions Short-term financing transactions. Related Party Transaction Due To Related Party [Table Text Block] Amount due to related parties Related Party Transaction Due to Related Party. Relationships and Transactions With Certain Other Parties [Table Text Block] Relationships and transactions with certain other parties Relationships and transactions with certain other parties. Transactions and Amounts Outstanding With Certain Other Parties [Table Text Block] Transactions and amounts outstanding with certain other parties Transactions and amounts outstanding with certain other parties. Guarantees For Bank Loans With Certain Other Parties [Table Text Block] Guarantees for bank loans with certain other parties Guarantees for Bank Loans with certain other parties. Short-Term Financing Transactions With Certain Other Parties [Table Text Block] Short-term financing transactions with certain other parties Short-term financing transactions with certain other parties. Schedule Of Condensed Balance Sheet [Table Text Block] Condensed Balance Sheets Schedule Of Condensed Income Statement [Table Text Block] Condensed Statements of Operations Schedule Of Condensed Cash Flow Statement [Table Text Block] Condensed Statements of Cash Flows Organization and Description Of Business Textual [Abstract] Organization and description of business (Textual) Organization and description of business. Exchange Of Common Stock For Companys Series M Convertible Preferred Stock Exchange of common stock for company'S series M convertible preferred stock Exchange of common stock for companys series m convertible preferred stock. Percentage Of Preferred Stock Representing Number Of Common Stock Percentage of preferred stock representing number of common stock Percentage of preferred stock representing number of common stock. Treasury Stock, Shares, Acquired Common stock, shares repurchased Treasury Stock, Value, Acquired, Cost Method Common stock, shares repurchased, value Additional Paid In Capital, Common Stock Consideration paid in excess of par value of repurchased shares, recorded as additional paid in capital Ownership Percentage Of Former Stockholders After Shares Repurchase and Conversion Of Series M Preferred Stock In Company Ownership percentage of former stockholders after shares repurchase and conversion of series M preferred stock in the company Ownership percentage of former stockholders after shares repurchase and conversion of series m preferred stock in the company. Fair Value Disclosure, Off-Balance Sheet Risks, Amount, Asset Amount of off-balance sheet cash New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Change On Net Income Net income statement effect of off-balance sheet cash Minimum Period For That Bank Loans Provide Adequate Capital Resources To Fund Its Operations and Working Capital Minimum period for that bank loans provide adequate capital resources to fund its operations and working capital Minimum period for that bank loans provide adequate capital resources to fund its operations and working capital. Schedule Of Business Acquisitions, By Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Keyuan International Group Limited [Member] Keyuan International Group Limited [Member] Keyuan International Group Limited. Ningbo Keyuan Plastics Company [Member] Ningbo Keyuan Plastics Co. [Member] Ningbo Keyuan Plastics Co. Business Acquisition [Line Items] Business Acquisition [Line Items] Organization and Description Of Business (Additional Textual) [Abstract] Organization and Description of Business (Additional Textual) Equity Method Investment, Ownership Percentage Equity ownership percentage in the company Schedule Of Property, Plant and Equipment [Table] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Building [Member] Building [Member] Machinery and Equipment [Member] Machinery and equipment [Member] Vehicles [Member] Vehicles [Member] Office Equipment and Furniture [Member] Office equipment and furniture [Member] Office equipment and furniture. Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Summary Of Estimated Useful Lives Of Property, Plant and Equipment [Abstract] Summary of estimated useful lives of property, plant and equipment Property, Plant and Equipment, Estimated Useful Lives Property, Plant and Equipment, Estimated Useful Lives Contractual term of land use rights Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock Options [Member] Warrant [Member] Warrant [Member] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Summary Of Significant Accounting Policies (Textual) [Abstract] Summary of significant accounting policies (Textual) Antidilutive Securities Excluded From Computation Of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share Maturity Period Of Short Term Bank Borrowings Maturity period of short term bank borrowings Maturity period of Short term bank borrowings. Reimbursement On Discounted Bill Receivable Reimbursement on discounted bill receivable Reimbursement on discounted bill receivable. Percentage Of Invoiced Amount Collected On Behalf Of Tax Authorities Percentage of invoiced amount collected on behalf of tax authorities Percentage of invoiced amount collected on behalf of tax authorities. Minimum Percentage Of Contribution In Prc On Employee Salary Minimum percentage of contribution in PRC on employee salary Minimum percentage of contribution in prc on employee salary. Maximum Percentage Of Contribution In Prc On Employee Salary Maximum percentage of contribution in PRC on employee salary Maximum percentage of contribution in prc on employee salary. Defined Contribution Plan, Employer Discretionary Contribution Amount Employer contribution amount Largest Amount Of Recognized Income Tax Positions Largest amount of recognized income tax positions Largest amount of recognized income tax positions. Schedule Of Cash and Cash Equivalents [Table] Schedule of Cash and Cash Equivalents [Table] Geographical [Axis] Geographical [Axis] Segment, Geographical [Domain] Segment, Geographical [Domain] China PRC [Member] Hong Kong Hong kong [Member] Hong Kong Special Administrative Region [Member] Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Cash (Textual) [Abstract] Cash (Textual) Cash. Accounts Receivable (Textual) [Abstract] Accounts Receivable (Textual) Percentage Of Prepayment Of Sales Contract Price Percentage of prepayment of sales contract price from customers Percentage of prepayment of sales contract price. Inventory, Net [Abstract] Components of inventories Inventory, Raw Materials, Gross Raw materials Inventory, Finished Goods, Gross Finished goods Inventory, Work In Process, Gross Work-in-process Consumption Tax Refund Receivable (Textual) [Abstract] Consumption Tax Refund Receivable (Textual) Consumption Tax Refund Receivable . Claims For Consumption Tax Claims for consumption tax Claims for consumption tax. Components Of Other Current Assets [Abstract] Components of other current assets Vat Recoverable VAT recoverable VAT recoverable. Receivable From Third Party Receivable from Ningbo Litong (Note 22) Receivable from a third party. Customs Deposits For Imported Inventories Customs deposits for imported inventories Customs deposits for imported inventories. Others Others Others Other Current Assets (Textual) [Abstract] Other Current Assets (Textual) Other Current Assets. Estimate Amount Of Deductible Input Value Assesed Tax From Property Plant and Equipment Estimate of deductible input VAT Estimate amount of deductible input value assed tax from property, plant and equipment. Construction In Progress [Member] Construction-in-progress [Member] Property, Plant and Equipment, Net, By Type [Abstract] Property, plant and equipment Property, Plant and Equipment, Gross Property, plant and equipment, Gross Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Depreciation, Depletion and Amortization [Abstract] Depreciation expense on property, plant and equipment Cost Of Goods and Services Sold, Depreciation Cost of sales Selling, General and Administrative Expenses Depreciation Selling, general and administrative expenses Selling, general and administrative expenses depreciation. Property, Plant and Equipment (Textual) [Abstract] Property, Plant and Equipment (Textual) Property, plant and equipment. Interest Costs Capitalized Interest capitalized Schedule Of Acquired Finite-Lived Intangible Asset By Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Finite-Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Licensing Agreements [Member] Licensing agreements [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible assets Finite-Lived Intangible Asset, Useful Life Licensing agreements, Amortization Period Finite-Lived License Agreements, Gross Licensing agreements Finite-Lived Intangible Assets, Accumulated Amortization Less: Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Intangible Assets (Textual) [Abstract] Intangible Assets (Textual) Intangible Assets. Amortization Of Intangible Assets Amortization of Intangible Assets Estimated Amortization Expense Estimated amortization expense for each of the next five years Estimated Amortization Expense. Summery Of Land Use Rights [Abstract] Land Use Rights Land Use Rights Land use rights Land use rights. Accumulated Amortization On Land Use Rights Less: Accumulated amortization Accumulated amortization on land use rights. Accumulated Amortization On Land Use Rights Land Use Rights (Textual) [Abstract] Land use rights (Textual) Land Use Rights. Short-Term Bank Borrowings [Abstract] Short-Term Bank Borrowings Schedule Of Short-Term Debt [Table] Schedule of Short-term Debt [Table] Short-Term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-Term Debt, Type [Domain] Short-term Debt, Type [Domain] Bank Loans In Rmb [Member] Bank loans in RMB [Member] Bank loans in RMB. Bank Loans In Usd [Member] Bank Loans In USD [Member] Bank loans in USD. Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Shanghai Pudong Development Bank [Member] Shanghai Pudong Development Bank [Member] Shanghai pudong development bank. Bank Of China [Member] Bank of China [Member] Bank of China. China Citic Bank [Member] China CITIC Bank [Member] China CITIC Bank. China Construction Bank [Member] China Construction bank [Member] China construction bank. Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] One Year Fixed Term Deposit [Member] Ningbo Keyuan's one year fixed term deposit [Member] One year fixed term deposit. Pledged Deposit [Member] Pledged deposit [Member] Pledged deposit. Short-Term Debt [Line Items] Short-term Debt [Line Items] Short Term Bank Borrowings (Textual) [Abstract] Short-term bank borrowings (Textual) Short Term Bank Borrowings. Short Term Loan Payable Secured Carrying Amount Short term loan payable secured carrying amount Short term loan payable secured carrying amount. Short-Term Debt, Weighted Average Interest Rate Short-term Debt, Weighted Average Interest Rate Additional Short-Term Bank Borrowings (Textual) [Abstract] Additional short-term bank borrowings (Textual) Range Of Maturity Term Range of maturity term Range of maturity term. Interest Range Minimum Interest range minimum Interest range minimum. Interest Range Maximum Interest range maximum Interest range maximum. Amount Guaranteed By Related Party and Third Party Entities and Individuals Amount guaranteed by related party and third party entities and individuals Guaranteed by related party and third-party entities and individuals. Amount Guaranteed By Chief Executive Officer Amount guaranteed by Chief Executive Officer Amount guaranteed by chief executive officer. Land Buildings and Equipment Carrying Amount Land buildings and equipment carrying amount Land buildings and equipment carrying amount. Amount Secured By Land Buildings and Equipment Amount secured by land, buildings and equipment Amount secured by land, buildings and equipment. Schedule Of Long-Term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Industrial and Commercial Bank Of China [Member] Industrial and Commercial Bank of China [Member] Industrial and commercial bank of China. Debt Instrument [Line Items] Debt Instrument [Line Items] Loans Payable To Bank [Abstract] Summary of long-term bank borrowings Loans Payable To Bank Loan from Bank Long Term Debt (Textual) [Abstract] Long term debt (Textual) Long Term Debt Interest Rate Range Minimum Long term debt interest rate range minimum Long term debt interest rate range minimum. Long Term Debt Interest Rate Range Maximum Long term debt interest rate range maximum Long term debt interest rate range maximum. Advances From Customers (Textual) [Abstract] Advances from Customers (Textual) Percentage Prepayment Required By Customers Of Sales Contract Price Percentage of sales contract price prepayments required from customers Percentage prepayment required by customers of sales contract price. Accounts Payable and Accrued Liabilities, Current [Abstract] Accrued expenses and other payables Purchase Of Property Plant and Equipment Payables for the purchase of property, plant and equipment Purchase of property, plant and equipment. Accrued Employee Benefits, Current Accrued payroll and welfare Liquidated Damages Payable Liquidated damages Liquidated damages payable. Other Accrued Liabilities, Current Other accruals and payables Schedule Of Stock By Class [Table] Schedule of Stock by Class [Table] Class Of Stock [Axis] Class of Stock [Axis] Class Of Stock [Domain] Class of Stock [Domain] Series Preferred Stock [Member] Series A convertible preferred stock [Member] Warrant Series One [Member] Series A warrants [Member] Series A warrant. Warrant Series Two [Member] Series B warrants [Member] Warrant B warrant. Series B Preferred Stock [Member] Series B convertible preferred stock [Member] Series C Warrant [Member] Series C Warrant [Member] Series C Warrant. Series D Warrant [Member] Series D Warrant [Member] Series D Warrant. Sale Of Stock [Axis] Sale of stock. Sale Of Stock [Axis] Sale Of Stock [Domain] Sale of stock. Sale Of Stock [Domain] Series Private Placement [Member] Series A Private Placement [Member] Series A Private Placement. Series B Private Placement [Member] Series B Private Placement [Member] Series B Private Placement. Class Of Stock [Line Items] Class of Stock [Line Items] Proceeds From Issuance Of Private Placements [Abstract] Proceeds from issuance of private placements Proceeds From Issuance Of Private Placement Gross Gross Proceeds Proceeds from Issuance of Private Placement Gross. Private Placement Equity Issuance Cost Issuance cost Private placement equity issuance cost. Fair Value, By Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value Assumptions and Methodology For Assets and Liabilities [Abstract] Fair Value Assumptions Fair Value Assumptions, Expected Volatility Rate Expected volatility Fair Value Assumptions, Expected Dividend Rate Expected dividends yield Fair Value Assumptions, Expected Term Time to maturity Fair Value Assumptions, Risk Free Interest Rate Weighted average risk-free interest rate Fair Value Assumptions, Common Stock Fair Value Fair value of the common stock Fair value assumptions, common stock fair value. Series Common Stock [Member] Series A Common Stock [Member] Summary Of Effective Conversion Prices and Estimated Fair Values [Abstract] Summary of effective conversion prices and estimated fair values Effective Initial Conversion Price Of Stock Issued Effective initial conversion price of stock issued Effective initial conversion price of stock issued. Fair Value Intrinsic Value Of Stock Issued Fair value Intrinsic value of stock issued Fair value Intrinsic value of stock issued. Series Convertible Prefered Stock [Member] Series A Convertible Prefered Stock [Member] Series A Convertible prefered stock. Convertible Preferred Stock [Member] Series B convertible preferred stock [Member] Statement Class Of Investor [Axis] Investors. Statement Class Of Investor [Axis] Statement Class Of Investor [Domain] Investors. Statement Class Of Investor [Domain] Series Investors [Member] Series A Investors [Member] Series A Investors. Series B Investors [Member] Series B Investors [Member] Series B Investors. Stockholders Equity and Related Financing Agreements (Textual) [Abstract] Stockholders Equity and Related Financing Agreements (Textual) Stockholders’ equity and related financing agreements. Securities Issued Under Private Placement Offering Securities issued under private placement offering Securities issued under private placement offering. Securities Issued Under Private Placement Offering Price Per Unit Securities issued under private placement offering price per unit Securities issued under private placement offering price per unit. Description Of Securities Issued Under Private Placement Offering Description of Securities issued under private placement offering Description of Securities issued under private placement offering. Maximum Number Of Shares Of Common Stock Issuable On Conversion Of Warrants Maximum Number Of Shares Of Common Stock Issuable On Conversion Of Warrants Maximum number of shares of common stock Maximum number Of shares of common stock issuable on conversion of warrants. Investment Warrants, Exercise Price Exercise price Shares Of Common Stock Issuable On Conversion Of Warrant One Shares of common stock issuable on conversion of warrant one Shares of common stock issuable on conversion of warrant one. Shares Of Common Stock Issuable On Conversion Of Warrant Two Shares of common stock issuable on conversion of warrant two Shares of common stock issuable on conversion of warrant two Shares Of Common Stock Issuable On Conversion Of Warrant Three Shares of common stock issuable on conversion of warrant three Shares of common stock issuable on conversion of warrant threeShares of common stock issuable on conversion of warrant three. Warranr Exercise Price One Warranr exercise price one Warranr exercise price one. Warranr Exercise Price Two Warranr exercise price two Warranr exercise price two. Warranr Exercise Price Three Warranr exercise price three Warranr exercise price three. Estimated Fair Value Of Placement Agent Warrant Estimated fair value of placement agent warrant Estimated fair value of placement agent warrant. Convertible Preferred Stock, Terms Of Conversion Convertible preferred stock, conversion terms Convertible Preferred Stock Redemption Condition Convertible preferred stock redemption condition Convertible preferred stock redemtion condition. Preferred Stock, Redemption Price Per Share Price per share of reedemable preferred stock Preferred Stock, Dividend Rate, Percentage Annual dividend rate Preferred Stock, Dividend Rate, Per-Dollar-Amount Per share amount of annual dividend Dividends, Preferred Stock, Cash Distribution of annual cash dividend Estimated Dividends To Be Distributed Estimated dividend to be distributed Estimated dividends to be distributed. Dividend Waived Dividend waived Dividend waived. Conversion Of Stock, Shares Converted Company’s common stock issued Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises In Period Number of warrants exercised Stock Issued During Period, Shares, Share-Based Compensation, Net Of Forfeitures Number of common stock issued in exercise of warrants Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures, Total Declaration Of Registration Statement Declaration of registration statement Declaration of registration statement. Filing Of Registration Statement Filing of registration statement Filing of registration statement. Payment Of Liquidated Damages Payment of liquidated damages Payment of liquidated damages. Cap Of Liquidated Damages Cap of liquidated damages Cap of liquidated damages. Period For Issuance Of Accrued Dividend Period for issuance of accrued dividend Period for issuance of accrued dividend. Estimated Derivative Contingent Liability Estimated derivative contingent liability Estimated derivative contingent liability. Convertible Preferred Stock, Shares Issued Upon Conversion Convertible Preferred Stock, Shares Issued upon Conversion Shares converted into common stock Shares Received On Pro Rata Basis If Performance Threshhold Is Not Achieved Shares received on pro rata basis if performance threshhold is not achieved Shares received on pro rata basis if performance threshhold is not achieved. Maximum Outstanding Voting Securities Of Merged Entities Maximum outstanding voting securities of merged entities Maximum outstanding voting securities of merged entities. Number Of Escrow Shares Agreement Number of Escrow shares agreement Escrow shares agreement. Percentage Of Escrow Shares Released Back Minimum percentage of Escrow shares released back Percentage of Escrow shares released back. Limit Of Performance Threshhold Defined As Net Income Target Limit of performance threshhold defined as net income target Limit of performance threshhold defined as net income target. Description Of Escrow Shares Released Back Description of Escrow shares released back Description of Escrow shares released back. Common Stock and Capital Contributions (Textual) [Abstract] Common Stock and Capital Contributions (Textual) Amount Distributed To Common Stockholders As Dividends Amount distributed to common stockholders as dividends Amount distributed to common stockholders as dividends. Annual Cash Dividend Per Share Annual cash dividend per share for 2010 to be paid quarterly to its common stock annual cash dividend per share. Class Of Warrant Or Right [Table] Class of Warrant or Right [Table] Class Of Warrant Or Right [Axis] Class of Warrant or Right [Axis] Class Of Warrant Or Right [Domain] Class of Warrant or Right [Domain] Series Warrants [Member] Series A Warrants [Member] Series A warrants. Series B Warrants [Member] Series B Warrants [Member] Series B warrants. Series C Warrants [Member] Series C Warrants [Member] Series C warrants. Series D Warrants [Member] Series D Warrants [Member] Series D warrants. Class Of Warrant Or Right [Line Items] Class of Warrant or Right [Line Items] Schedule Of Issued Warrants To Purchase Companys Common Stock Abstract [Abstract] Schedule of issued warrants to purchase the Company’s common stock Warrants Issuance Dates Issuance dates Warrants issuance dates. Common Stock Purchase Warrants (Textual) [Abstract] Common Stock Purchase Warrants (Textual) Warrants Expiration Period From Issuance Dates Warrants expiration period from issuance dates Description For Callable Series and Series B Warrants Description for callable series A and Series B warrants Description for callable series A and Series B warrants. Employee Stock Option [Member] Employee stock option grants [Member] Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding [Roll Forward] Summary of the share options granted and the activity Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Number Number of options, Outstanding as of December 31, 2011 Balance as of December 31, 2010 Number of options, Balance as of January 1,2010 Number of options, Balance Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross Number of options, Granted on June 30,2010 Number of stock options granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross One Number of options, Granted on July 1,2010 Share based compensation arrangement by share based payment award options grants in period gross one. Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Two Number of options, Granted on August 4,2010 Share based compensation arrangement by share based payment award options grants in period gross two. Share Based Compensation Arrangement By Share Based Payment Award Options Cancelled In Period Number of options, Cancelled Share based compensation arrangement by share based payment award options cancelled in period. Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Forfeitures In Period Number of options, Forfeited Cancellation of stock option granted to certain employees Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable, Number Number of options, Exercisable as of December 31, 2010 Number of options, Exercisable Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price, Outstanding as of December 31, 2011 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price, Balance Share-Based Compensation Arrangements By Share-Based Payment Award, Options, Grants In Period, Weighted Average Exercise Price Weighted average exercise price, Granted on June 30,2010 Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price One Weighted average exercise price, Granted on July 1,2010 Share based compensation arrangements by share based payment award options grants in period weighted average exercise price one. Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Two Weighted average exercise price, Granted on August 4,2010 Share based compensation arrangements by share based payment award options grants in period weighted average exercise price two. Share Based Compensation Arrangements By Share Based Payment Award Options Cancelled In Period Weighted Average Exercise Price Weighted average exercise price, Cancelled Share based compensation arrangements by share based payment award options cancelled in period weighted average exercise price. Share-Based Compensation Arrangements By Share-Based Payment Award, Options, Forfeitures In Period, Weighted Average Exercise Price Weighted average exercise price, Forfeited Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted average exercise price, Exercisable as of December 31, 2011 Weighted average exercise price, Exercisable Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contractual term, Nonvested at December 31, 2011 Weighted average remaining contractual term Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Weighted average remaining contractual term, Exercisable as of December 31, 2011 Weighted average remaining contractual term, Exercisable Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value, Outstanding as of December 31, 2011 Aggregate intrinsic value, Balance Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercisable, Intrinsic Value Aggregate intrinsic value, Exercisable as of December 31, 2011 Aggregate intrinsic value, Exercisable as of December 31, 2010 Aggregate intrinsic value, Exercisable Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Non Vested Stock Options [Member] Non-vested stock options [Member] Non-vested stock options. Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested, Number Of Shares [Roll Forward] Information relating to non-vested stock options Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Options, Nonvested at December 31, 2011 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period Options, Granted Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested In Period Options, Vested Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Forfeited In Period Options, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Options Period Weighted Average Grant Date Fair Value Weighted average grant-date fair value, Nonvested at January 1, 2011 Weighted average grant-date fair value, Nonvested at December 31, 2011 Share based compensation arrangement by share based payment award options period weighted average grant date fair value. Share Based Compensation Arrangement By Share Based Payment Award Options Period Weighted Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Options Granted Period Weighted Average Grant Date Fair Value Weighted average grant-date fair value, Granted Share based compensation arrangement by share based payment award options granted period weighted average grant date fair value. Share Based Compensation Arrangement By Share Based Payment Award Options Vested Period Weighted Average Grant Date Fair Value Weighted average grant-date fair value, Vested Share based compensation arrangement by share based payment award options vested period weighted average grant date fair value. Share Based Compensation Arrangement By Share Based Payment Award Options Forfeited Period Weighted Average Grant Date Fair Value Weighted average grant-date fair value, Forfeited Share based compensation arrangement by share based payment award options forfeited period weighted average grant date fair value. Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract] Summary of grant-date fair value of the stock options granted based on the assumptions Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Awards granted, Expected volatility Options granted, Expected volatility Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Awards granted, Expected dividend yield Options granted, Expected dividend yield Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Awards granted, Weighted average risk-free interest rate Options granted, Weighted average risk-free interest rate Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Expected Term Awards granted, Weighted average expected life (in years) Options granted, Weighted average expected life (in years) Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Exercise Price Awards granted, Estimated fair value of underlying common stock Options granted, Estimated fair value of underlying common stock Summary Of Stock Options Granted To Non-Employees [Abstract] Summary of stock options granted to non-employees Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Exercise Price Minimum Awards granted, Estimated fair value of underlying common stock, Minimum Share based compensation arrangement by share based payment award fair value assumptions exercise price minimum. Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Exercise Price Maximum Awards granted, Estimated fair value of underlying common stock, Maximum Share based compensation arrangement by share based payment award fair value assumptions exercise price maximum. Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Equity Incentive Plan [Member] 2010 Equity Incentive Plan [Member] Equity Incentive Plan. Vest and Exercisable Condition One [Member] Vest and Exercisable Condition 1 [Member] Vest and exercisable condition one. Vest and Exercisable Condition Two [Member] Vest and Exercisable Condition 2 [Member] Vest and exercisable condition two. Title Of Individual [Axis] Title of Individual [Axis] Title Of Individual With Relationship To Entity [Domain] Title of Individual with Relationship to Entity [Domain] Senior Management Employees [Member] Senior Management Employees [Member] Senior Management Employees. Director [Member] Two Independent Directors [Member] Employees [Member] Employees [Member] Employees. Consultant [Member] Consultant [Member] Consultant. External Hr Consultant [Member] External Hr Consultant [Member] External HR consultant. Non Employee [Member] Non Employee [Member] Non employee. Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Hayden Communications International [Member] Hayden Communications International [Member] Hayden Communications International. Chesapeake Group Inc [Member] Chesapeake Group Inc [Member] Chesapeake Group, Inc. Hampton Growth Resources Llc [Member] Hampton Growth Resources LLC [Member] Hampton Growth Resources, LLC. Share Based Payments (Textual) [Abstract] Share-based payments (Textual) Share-based payments. Number Of Shares Issuable Pursuant To Equity Incentive Plan Number of Shares issuable pursuant to Equity Incentive Plan Number of Shares issuable pursuant to Equity Incentive Plan. Share-Based Compensation, Shares Authorized Under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term Conractual term of stock option Investment Options, Expiration Date Stock option expiration date Share-Based Compensation, Shares Authorized Under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price Exercise price of stock option Condition For Stock Option To Vest and Become Exercisable Condition for stock option to vest and become exercisable Condition for stock option to vest and become exercisable. Share-Based Compensation Grant Date Fair Value Grant date fair value of stock options Share-based Compensation Grant date fair value. Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested and Expected To Vest, Outstanding, Number Number of stock options vested Share Based Compensation Arrangement By Share Based Payment Award Options Vested and Expected To Vest Periodically Outstanding Number Number of stock options vested monthly from September 1, 2010 through April 1, 2011 Share based compensation arrangement by share based payment award options vested and expected to vest Periodically outstanding number. Remaining Stock Option Subject To Vest and Exercisable Remaining stock option subject to vest and exercisable Remaining stock option subject to vest and exercisable. Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Period Vesting period of stok options Percentage Of Stock Option Vest and Exercisable In Year One Percentage of stock option vest and exercisable in year one Percentage of stock option vest and exercisable in Year one. Percentage Of Stock Option Vest and Exercisable In Year Two Percentage of stock option vest and exercisable in year two Percentage of stock option vest and exercisable in Yea Two. Percentage Of Stock Option Vest and Exercisable In Year Three Percentage of stock option vest and exercisable in year three Percentage of stock option vest and exercisable in Year Three. Stock Issued During Period, Shares, Issued For Services Stock Issued During Period, Shares, Issued for Services Period Of Services Period of services Period of services. Allocated Share-Based Compensation Expense Share-based compensation expenses related to employee stock options charged to general and administrative expenses and services Employee Service Share-Based Compensation, Nonvested Awards, Total Compensation Cost Not Yet Recognized Unrecognized compensation costs related to employee stock options Employee Service Share-Based Compensation, Nonvested Awards, Total Compensation Cost Not Yet Recognized, Period For Recognition Remaining weighted average service period Exercise Price Of Incentive Stock Option Exercise price of incentive stock option Exercise price of incentive stock option. Term Of Incentive Stock Option Term of incentive stock option Term of incentive stock option. Fair Value Of Committed Cash Payment Fair value of committed cash payment Fair value of committed cash payment. Liability Related To Committed Cash Payment Liability related to committed cash payment Liability related to committed cash payment. Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested In Period, Fair Value Fair value of the stock options vested Income Tax Examination [Table] Income Tax Examination [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] United States U.S. [Member] Hong Kong and Bvi [Member] Hong Kong and Bvi [Member] Hong Kong and British Virgin Islands. Income Tax Examination [Line Items] Income Tax Examination [Line Items] Income Tax Expense (Benefit), Continuing Operations, By Jurisdiction [Abstract] Components of income before income tax expens by jurisdictions: Components Of Income Tax Expense (Benefit), Continuing Operations [Abstract] Group’s income tax expense Current Income Tax Expense (Benefit) Current income tax expense Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract] Income tax expense reconciliation Computed Expected Income Tax Expense Computed expected Income tax (benefit) expense Computed expected income tax expense. Computed Expected Income Tax Expense Percentage Computed expected Income tax (benefit) expense, Percentage Computed expected income tax expense percentage. Income Tax Provision On Gain (Loss) Not Recognized Tax loss not recognized Income tax provision on gain (loss) not recognized. Income Tax Provision On Gain (Loss) Not Recognized Percentage Tax loss not recognized, percentage Income tax provision on gain (loss) not recognized, percentage. Income Tax Reconciliation, Foreign Income Tax Rate Differential Effect of differential tax rate Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential Effect of differential tax rate, percentage Net Operating Loss From Overseas Subsidiaries Not Recognized NOLs from overseas subsidiaries not recognized Net operating loss from overseas subsidiaries not recognized. Net Operating Loss From Overseas Subsidiaries Not Recognized Percentage NOLs from overseas subsidiaries not recognized, Percentage Net operating loss from overseas subsidiaries not recognized percentage. Income Tax Reconciliation, Other Adjustments Others Other Adjustment Percentage Others, Percentage Other adjustment percentage. Income Tax Reconciliation, Tax Settlements, Total Permanent differences Income Tax Reconciliation Tax Settlements Percentage Permanent differences, percentage Income tax reconciliation tax settlements percentage. Income Tax Expenses Actual Percentage Incmoe tax expenses actual, Percenatge Actual income tax expense, Percentage Income tax expenses actual percenatge. Components Of Deferred Tax Assets [Abstract] Summory of deferred income tax assets Deferred Tax Assets, Operating Loss Carryforwards, Total Net operating tax loss carried forwards Deffered Income Tax Assets Depreciation Depreciation Deffered income tax assets depreciation. Deffered Income Tax Assets Interest On Pledged Bank Deposits Interest on pledged bank deposits Interest on pledged bank deposits. Interest on pledged bank deposits Accrued Payroll Taxes Accrued payroll expenses Accrued payroll expenses Deferred Tax Assets, Gross, Total Total gross deferred income tax assets Total gross deferred income tax assets Deferred Tax Assets, Valuation Allowance Valuation allowance Valuation allowance Deferred Tax Assets, Net Of Valuation Allowance, Total Net deferred tax assets Net deferred tax assets British Virgin Islands [Member] BVI [Member] BVI. Deferred Tax Assets, Net Of Valuation Allowance [Abstract] Deferred tax assets, net operating loss Deferred Tax Assets, Net Net operating loss Tax Credit Carryforward, Expiration Date Expiration Date Income Taxes (Textual) [Abstract] Income taxes (Textual) Federal Statutory Income Tax Rate Minimum Federal statutory income tax rate, Minimum Federal statutory income tax rate minimum. Federal Statutory Income Tax Rate Maximum Federal statutory income tax rate, Maximum Federal statutory income tax rate maximum. Statutory Income Tax Rate For Domestic Resident People republic of China statutory income tax rate Statutory income tax rate for domestic resident.. Tax Rate Levied Foriegn Resident Enterprises Tax rate levied on non Prc resident enterprises Tax rate levied on non Prc resident enterprises. Deferred Tax Liabilities, Undistributed Foreign Earnings Undistributed earnings Statute Of Limitations For Underpayment Of Taxes Statute of limitations for underpayment of taxes Statute of limitations for underpayment of taxes. Statute Of Limitations For Underpayment Of Taxes More Than Specified Limit Statute of limitations for underpayment of taxes more than specified limit Statute of limitations for underpayment of taxes more than specified limit. Underpayment Of Taxes Underpayment of taxe Underpayment of taxes. Statute Of Limitations In Case Of Transfer Pricing Statute of limitations in case of transfer pricing Statute of limitations in case of transfer pricing. Effective Income Tax Rate Reconciliation, At Federal Statutory Income Tax Rate Federal statutory income tax rate Statutory Reserves Textual [Abstract] Statutory Reserves (Textual) Statutory reserves. Minimum Percentage Allocation Of After Tax Profit Minimum percentage allocation of after tax profit Minimum percentage allocation of after tax profit. Percentage Of Statutory Reserve Balance Of Registered Capital Percentage of statutory reserve balance of registered capital Percentage of statutory reserve balance of registered capital. Contingency (Textual) [Abstract] Contingency (Textual) Terms Of Leases Range Minimum Terms of leases range minimum Terms of leases range minimum. Terms Of Leases Range Maximum Terms of leases range maximum Terms of leases range maximum. Operating Leases, Future Minimum Payments Due Future minimum lease payments, due in 2012, under non-cancellable operating lease agreements Contractual Obligation Contractual capital commitments for purchases of equipment Failure Of Subsidiary To Withhold Income Taxes Payment Failure of Ningbo Keyuan to withhold income taxes payment Failure of subsidiary to withhold income taxes payment. Letters Of Credit Outstanding, Amount Outstanding letter’s of Credit Schedule Of Earnings Per Share, Basic, By Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Financial Instrument [Axis] Financial Instrument [Axis] Types Of Financial Instruments [Domain] Types of Financial Instruments [Domain] Stock Option [Member] Options [Member] Series M Preferred Stock [Member] Series M convertible preferred stock [Member] Series M preferred stock. Earnings Per Share, Basic, By Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic [Abstract] Basic earnings per share: Dilutive Securities, Effect On Basic Earnings Per Share [Abstract] Effect of diluted securities: Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer [Member] Customer A [Member] Customer A. Customer B [Member] Customer B [Member] Customer B. Customer C [Member] Customer C [Member] Customer C. Customer D [Member] Customer D [Member] Customer D. Customer E [Member] Customer E [Member] Customer E. Customer F [Member] Customer F [Member] Customer F. Customer G [Member] Customer G [Member] Customer G. Customer H [Member] Customer H [Member] Customer H. Customer I [Member] Customer I [Member] Customer I. Customer J [Member] Customer J [Member] Customer J. Customer K [Member] Customer K [Member] Customer K. Customer L [Member] Customer L [Member] Customer L. Concentration Risk [Line Items] Concentration Risk [Line Items] Sales To Major Customer [Abstract] Sales to major customers Sales to major customers Sales to major customer. Entity-Wide Revenue, Major Customer, Amount Sales to major customer, Amount Entity-Wide Revenue, Major Customer, Percentage Sales to major customer, Percentage Significant Concentrations and Risks (Textual) [Abstract] Significant concentrations and risks (Textual) Deposit Assets Cash and pledged bank deposits in financial institutions Percentage Of Revenue Over That Customer Treated As Major Customer Percentage of revenue over that customer treated as major customer Percentage of revenue over that individual customer treated as major customer Number Of Major Supplier Number of major supplier Number of major supplier. Purchase From Major Supplier Purchase (net of VAT) from major supplier Purchase from major supplier. Purchase From Major Supplier Percentage Purchase from major supplier percentage Purchase from major supplier percentage. Purchase From Largest Supplier Amount Purchase from largest supplier, Amount Purchase from largest supplier amount. Purchase From Largest Supplier Percentage Purchase from largest supplier, Percentage Purchase from largest supplier percentage. Schedule Of Related Party Transactions, By Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Chunfeng Tao [Member] Mr. Tao [Member] Mr. Chunfeng Tao [Member] Chunfeng Tao. Jicun Wang [Member] Mr. Jicun Wang [Member] Jicun Wang. Peijun Chen [Member] Mr. Peijun Chen [Member] Peijun Chen. Sumei Chen [Member] Ms. Sumei Chen [Member] Sumei Chen. Yushui Huang [Member] Ms. Yushui Huang [Member] Yushui Huang. Weifeng Xue [Member] Mr. Weifeng Xue [Member] Weifeng Xue. Hengfeng Shou [Member] Mr. Hengfeng Shou [Member] Hengfeng Shou. Shifa Wang [Member] Mr. Shifa Wang [Member] Shifa Wang. Ming Liang Liu [Member] Mr. Ming Liang Liu [Member] Ming Liang Liu. Shegeng Ding [Member] Mr. Shegeng Ding [Member] Shegeng Ding. Fan Zhang [Member] Mr. Fan Zhang [Member] Fan Zhang. Ningbo Kewei Investment Co Ltd [Member] Ningbo Kewei [Member] Ningbo Kewei Investment Co., Ltd. (Ningbo Kewei) [Member] Ningbo Kewei Investment Co Ltd. Ningbo Pacific Ocean Shipping Co Ltd [Member] Ningbo Pacific [Member] Ningbo Pacific Ocean Shipping Co., Ltd (Ningbo Pacific) [Member] Ningbo Pacific Ocean Shipping Co Ltd. Ningbo Hengfa Metal Product Co Ltd [Member] Ningbo Hengfa [Member] Ningbo Hengfa Metal Product Co., Ltd (Ningbo Hengfa, former name "Ningbo Tenglong") [Member] Ningbo Hengfa Metal Product Co. Ltd. Shandong Tengda Stainless Steel Co Ltd [Member] Shandong Tengda [Member] Shandong Tengda Stainless Steel Co., Ltd (Shandong Tengda) [Member] Shandong Tengda Stainless Steel Co Ltd. Ningbo Xinhe Logistic Co Ltd [Member] Ningbo Xinhe [Member] Ningbo Xinhe Logistic Co., Ltd (Ningbo Xinhe) [Member] Ningbo Xinhe Logistic Co. Ltd. Ningbo Kunde Petrochemical Co Ltd [Member] Ningbo Kunde [Member] Ningbo Kunde Petrochemical Co, Ltd. (Ningbo Kunde) [Member] Ningbo Kunde Petrochemical Co Ltd. Ningbo Jiangdong Jihe Construction Materials Store [Member] Jiangdong Jihe [Member] Ningbo Jiangdong Jihe Construction Materials Store (Jiangdong Jihe) [Member] Ningbo Jiangdong Jihe Construction Materials Store Store. Ningbo Wanze Chemical Co Ltd [Member] Ningbo Wanze Chemical Co., Ltd (Ningbo Wanze) [Member] Ningbo Wanze Chemical Co Ltd. Ningbo Zhenhai Jinchi Petroleum Chemical Co Ltd [Member] Zhenhai Jinchi [Member] Ningbo Zhenhai Jinchi Petroleum Chemical Co., Ltd (Zhenhai Jinchi) [Member] Ningbo Zhenhai Jinchi Petroleum Chemical Co Ltd. Related Party Transaction [Line Items] Related Party Transaction [Line Items] Related Party Transactions Relationship [Abstract] Parties to the related party transactions Related Party Transactions Relationship. Related Party Transactions Relationship Relationship Related Party Transactions, Relationship. Due From Related Parties, Current [Abstract] Summary of amount due from related parties Amounts outstanding with the related parties Related Party Transaction Purchase Of Raw Material Purchase of raw material Purchases of raw material during the period with related party. Related Party Transaction Purchase Of Transportation Services Purchase of transportation services Purchases of transportation services during the period with related party. Related Party Transaction Credit Line Of Guarantee Provision For Bank Borrowings Guarantee provided during the period Credit line of guarantee provision for bank borrowings Related Party Transaction, Credit line of guarantee provision for bank borrowings. Related Party Transaction Loan Guarantee Fees Loan guarantee fees Related Party Transaction Loan guarantee fees. Related Party Transaction Short-Term Financing From Related Parties Short-term financing from related parties (e) Short-term financing from related parties Related Party Transaction Short-term financing from related parties. Related Party Transaction Short-Term Financing To Related Parties Short-term financing to related parties (e) Short-term financing to these parties Related Party Transaction Short-term financing to related parties. Due From Related Parties Amount due from related parties (f) Amount due from related parties Jicun Wang and Chen [Member] Jicun Wang and Chen. Related Party Transaction Guarantees For Bank Loans [Abstract] Guarantees for Bank Loans Related Party Transaction Guarantees for Bank Loans. Related Party Transaction Aggregate Guarantees Provided During Year Guarantee provided during the year Related party transaction, aggregate guarantees provided the during the year. Related Party Transaction Guarantees For Bank Loans Bank Loans guaranteed Related Party Transaction Guarantees for Bank Loans. Related Party Transactions Short-Term Financing Transactions [Abstract] Short-term financing transactions with related parties Short-term financing transactions with related parties. Related Party Transaction, Due From (To) Related Party Short-term financing transactions with related parties, Balance Short-term financing transactions with related parties, Balance Due To Related Parties, Current [Abstract] Summary of amount due to related parties Ningbo Litong [Member] Ningbo Litong [Member] Ningbo Litong Petrochemical Co., Ltd (Ningbo Litong) [Member] Ningbo Litong. Jiangdong Haikai [Member] Ningbo Jiangdong Haikai Construction Materials Store (Jiangdong Haikai) [Member] Jiangdong Haikai. Jiangdong Deze [Member] Jiangdong Deze [Member] Ningbo JiangdongDeze Chemical Co., Ltd (Jiangdong Deze) [Member] Jiangdong Deze. Ningbo Anqi [Member] Ningbo Anqi [Member] Ningbo Anqi Petrochemical Co., Ltd (Ningbo Anqi) [Member] Ningbo Anqi. Ningbo Kewei [Member] Ningbo Kewei [Member] Ningbo Kewei Investment Co., Ltd (Ningbo Kewei) [Member] Ningbo Kewei. Ningbo Kunde [Member] Ningbo Kunde Petrochemical Co., Ltd (Ningbo Kunde) [Member] Ningbo Kunde. Schedule Of Other Related Party [Axis] Schedule of other related party. Schedule Of Other Related Party [Axis] Schedule Of Other Related Party [Domain] Schedule of other related party. Schedule Of Other Related Party [Domain] Certain Other Parties [Member] Certain other parties. Relationships and Transactions With Certain Other Parties [Abstract] Relationships and transactions with certain other parties Relationships and transactions with certain other parties. Transactions and Amounts Outstanding With Certain Other Parties [Abstract] Transactions and amounts outstanding with certain other parties Transactions and amounts outstanding with certain other parties. Revenue From Other Related Party Sales of products (a) Revenue from other related party. Other Related Party Transaction Purchase Of Raw Material Purchase of raw material (b) Other Related Party Transaction Purchase of Raw Material. Other Related Party Transaction Credit Line Of Guarantee Provision For Bank Borrowings Credit line of guarantee for bank borrowings (j) Other Related Party Transaction Credit line of guarantee provision for bank borrowings. Other Related Party Transaction Loan Guarantee Fee Loan guarantee fees (d) Other Related Party Transaction Loan guarantee fee. Short-Term Financing From Other Related Parties Short-term financing from these parties Short-term financing from other related parties . Short-Term Financing To Other Related Parties Short-term financing to these parties (k) Short-term financing to other related parties. Due From Other Related Parties, Current Balance amount from other related parties Amounts due from these parties Due To Other Related Parties, Classified, Current Amounts due to these parties Guarantees For Bank Loans, Other Related Parties [Abstract] Guarantees for bank loans from other certain parties Guarantees for Bank Loans, Other related parties. Other Related Parties Guarantee Provided Guarantee provided during the period Other related parties guarantee provided. Other Related Parties Bank Loan Guaranteed Bank loans guaranteed Other related parties bank loan guaranteed. Other Related Parties Short-Term Financing Transactions [Abstract] Short-term financing transactions from other related parties Other related parties, short-term financing transactions. Ningbo Kunde Other Parties [Member] Ningbo Kunde Other Parties. Ningbo Kewei Other Parties [Member] Ningbo Kewei Other Parties. Ningbo Litong Petrochemical Company Limited [Member] Ningbo Litong [Member] Ningbo Litong Petrochemical Co Ltd. Related Party Transactions and Relationships and Transactions With Certain Other Parties (Textual) [Abstract] Related Party Transactions and Relationships and Transactions With Certain Other Parties (Textual) Related Party Transactions And Relationships And Transactions With Certain Other Parties. Outstanding Advances From Related Parties Outstanding advances from related parties Outstanding advances from related parties. Related Party Transaction Advance Payment Related To Purchase Of Raw Material Outstanding advance payment in advance respect to raw material purchase transaction Related party transaction advance payment related to purchase of raw material. Related Party Transaction Due Related To Transport Services Amount owed in respect of transport services Related Party Transaction, due related to transport services. Percentage Of Guarantee Fee Of Loan Principal Guarantee fee as a percentage of loan principal Percentage of guarantee fee of loan principal. Aggregate Related Party Transaction Loan Guarantee Fees Included In Statement Of Operations Loan guarantee fees included in statement of operation for Ningbo Hengfa, Ningbo Pacific and Ningbo Kewei Aggregate related party transaction loan guarantee fees. Subsequent Events Textual [Abstract] Subsequent Events (Textual) Subsequent events. New Cooperation Agreement To Build New Production Facility By Company New cooperation agreement to build a new production facility by company New cooperation agreement to build a new production facility by company. Expected Annual Production Capacity Of New Materials Industrial Park Expected annual production capacity of new Materials Industrial Park (metric tons) Expected annual production capacity of new Materials Industrial Park. Schedule Of Condensed Financial Statements [Table] Schedule of Condensed Financial Statements [Table] Parent Company [Member] Parent Company [Member] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Condensed Balance Sheets [Abstract] Condensed Balance Sheets Condensed Balance Sheets. Equity Method Investment, Aggregate Cost Investment in subsidiaries Inter Company Liabilities Inter-company liabilities Inter company liabilities. Condensed Statements Of Operations [Abstract] Condensed statements of operations Condensed statements of operations. Condensed Statements Of Cash Flows [Abstract] Condensed statements of cash flows. Condensed Statements Of Cash Flows [Abstract] Stock Or Unit Option Plan Expense Stock option expense Increase (Decrease) In Accounts Payable and Accrued Liabilities, Total Increase in accounts payable, accrued expenses and other payables Payments To Acquire Equity Method Investments Investment in subsidiaries Investment in subsidiaries Advances From Inter Group Company Advance from inter-group company Advances from inter group company. Parent Company (Textual) [Abstract] Keyuan Petrochemicals, Inc. (Parent Company) (Textual) Parent company textual. Minimum Percentage Of Profit After Tax To Be Allocated To General Reserve Minimum percentage of profit after tax to be allocated to General Reserve under PRC Minimum percentage of profit after tax to be allocated to general reserve. Mandatory Percentage Of Allocations Of Profit After Tax To General Reserve To Discontinue Allocations Mandatory percentage of allocations of PAT to General Reserve to discontinue allocations under PRC Mandatory Percentage of allocations of profit after tax to general reserve to discontinue allocations. Amount Of Restricted Net Assets For Consolidated and Unconsolidated Subsidiaries Restricted in the ability to transfer a portion of their net assets to either in the form of dividends, loans or advances under PRC Business Acquisition, Acquiree [Domain]