Individual [Axis] Mr. Luther [Member] Dr. Angel [Member] Non-PEO NEO [Member] Adjustment to Compensation [Axis] SCT Value of Stock and Option Awards [Member] Fair Value at Covered Year-End of Awards Granted During the Covered Fiscal Year that are Outstanding and Unvested at Covered Year-End [Member] Fair Value at Vest Date of Awards Granted and Vested During the Covered Fiscal Year [Member] Year-Over-Year Change in Fair Value of Awards Granted in any Prior Fiscal Year that are Outstanding and Unvested at Covered Year End [Member] Change as of the Vesting Date (From the End of the Prior Fiscal Year) in Fair Value of Awards Granted in any Prior Fiscal Year for Which All Vesting Conditions were Satisfied at the End of or During the Covered Fiscal Year [Member] Fair Value at End of Prior Year of Awards Granted in any Prior Fiscal Year that Fail to Meet the Applicable Vesting Conditions During the Covered Fiscal Year [Member] Cover [Abstract] Document Type Entity Registrant Name Entity Central Index Key Document Period End Date Amendment Flag Amendment Description Pay vs Performance Disclosure [Table] Pay vs Performance [Table Text Block] Company Selected Measure Name Named Executive Officers, Footnote [Text Block] Peer Group Issuers, Footnote Changed Peer Group, Footnote Total Compensation from SCT Compensation Actually Paid (as calculated) Adjustment To PEO Compensation, Footnote Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Compensation Actually Paid Amount Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Equity Valuation Assumption Difference, Footnote Compensation Actually Paid vs. Total Shareholder Return [Text Block] Compensation Actually Paid vs. Net Income [Text Block] Compensation Actually Paid vs. Company Selected Measure Total Shareholder Return Vs Peer Group Compensation Actually Paid vs. Other Measure Tabular List, Table Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Net Income (Loss) Attributable to Parent Company Selected Measure Amount Other Performance Measure, Amount Total adjustments for equity awards PEO Name Name Non-GAAP Measure Description Additional 402(v) Disclosure Pension Benefits Adjustments, Footnote Equity Awards Adjustments, Footnote Erroneously Awarded Compensation Recovery [Table] Restatement Determination Date [Axis] Restatement Determination Date Aggregate Erroneous Compensation Amount Erroneous Compensation Analysis Stock Price or TSR Estimation Method Outstanding Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Not Yet Determined Name Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery, Explanation of Impracticability Name Compensation Amount Restatement does not require Recovery Award Timing Disclosures [Line Items] Award Timing MNPI Disclosure [Text Block] Award Timing Method Award Timing Predetermined Award Timing MNPI Considered [Flag] Award Timing, How MNPI Considered MNPI Disclosure Timed for Compensation Value [Flag] Awards Close in Time to MNPI Disclosures, Table Name Underlying Securities Exercise Price Fair Value as of Grant Date Underlying Security Market Price Change Trading Arrangements, by Individual [Table] Trading Arrangement [Axis] Material Terms of Trading Arrangement Name Title Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted Adoption Date Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated Termination Date Expiration Date Arrangement Duration Aggregate Available Insider Trading Policies and Procedures [Line Items] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Mr. Luther [Member] Dr. Angel [Member] SCT Value of Stock and Option Awards [Member] Fair Value at Covered Year-End of Awards Granted During the Covered Fiscal Year that are Outstanding and Unvested at Covered Year-End [Member] Fair Value at Vest Date of Awards Granted and Vested During the Covered Fiscal Year [Member] Year-Over-Year Change in Fair Value of Awards Granted in any Prior Fiscal Year that are Outstanding and Unvested at Covered Year End [Member] Change as of the Vesting Date (From the End of the Prior Fiscal Year) in Fair Value of Awards Granted in any Prior Fiscal Year for Which All Vesting Conditions were Satisfied at the End of or During the Covered Fiscal Year [Member] Fair Value at End of Prior Year of Awards Granted in any Prior Fiscal Year that Fail to Meet the Applicable Vesting Conditions During the Covered Fiscal Year [Member] Forgone Recovery, Individual Name Outstanding Recovery, Individual Name Awards Close in Time to MNPI Disclosures, Individual Name Trading Arrangement, Individual Name