Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Pay vs Performance Disclosure [Line Items] All Trading Arrangements All Trading Arrangements [Member] Restatement Determination Date Restatement Determination Date Underlying Security Market Price Change Underlying Security Market Price Change, Percent All Adjustments to Compensation All Adjustments to Compensation [Member] Award Timing Disclosures [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] All Individuals All Individuals [Member] All Award Types Award Type [Domain] Fair Value as of Grant Date Award Grant Date Fair Value Compensation Amount Outstanding Recovery Compensation Amount Year Over Year Change in Fair Value of Outstanding and Unvested Equity Awards [Member] Year over year change in fair value of outstanding and unvested equity awards. Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] PEO Name PEO Name Restatement Determination Date: Restatement Determination Date [Axis] Year End Fair Value of Equity Awards [Member] Year end fair value of equity awards. Employee Stock Option Employee Stock Option [Member] Insider Trading Policies and Procedures [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Insider Trading Arrangements [Line Items] Document Type Document Type Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Tabular List, Table Tabular List [Table Text Block] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Entity Registrant Name Entity Registrant Name Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Award Timing Method Award Timing Method [Text Block] Equity Award Adjustments [Member] Equity award adjustments. Adjustment to Compensation, Amount Adjustment to Compensation Amount Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Adoption Date Trading Arrangement Adoption Date Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Entity Central Index Key Entity Central Index Key Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year [Member] Fair value at the end of the prior year of equity awards that failed to meet vesting conditions in the year. Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Name Trading Arrangement, Individual Name Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Year Over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year [Member] Year over year change in fair value of equity awards granted in prior years that vested in the year. Net Income (Loss) Net Income (Loss) Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Company Selected Measure Name Company Selected Measure Name Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Amendment Flag Amendment Flag Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Title Trading Arrangement, Individual Title Executive Category: Executive Category [Axis] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Name Measure Name Total Shareholder Return Amount Total Shareholder Return Amount Individual: Individual [Axis] Name Forgone Recovery, Individual Name Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Reported Value of Equity Awards [Member] Reported value of equity awards. Underlying Securities Award Underlying Securities Amount Measure: Measure [Axis] Name Outstanding Recovery, Individual Name Company Selected Measure Amount Company Selected Measure Amount Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year [Member] Fair value as of vesting date of equity awards granted and vested in the year. Exercise Price Award Exercise Price Name Awards Close in Time to MNPI Disclosures, Individual Name Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Cover [Abstract] Cover [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Non-NEOs Non-NEOs [Member] PEO PEO [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Non-PEO NEO Non-PEO NEO [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Arrangement Duration Trading Arrangement Duration Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Other Performance Measure, Amount Other Performance Measure, Amount Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Award Type Award Type [Axis] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount All Executive Categories All Executive Categories [Member] Award Timing Predetermined Award Timing Predetermined [Flag] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Trading Arrangement: Trading Arrangement [Axis] Termination Date Trading Arrangement Termination Date Value of Dividends or Other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation [Member] Value of dividends or other earnings paid on stock or option awards not otherwise reflected in fair value or total compensation. PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table]