Pay vs Performance Disclosure [Line Items] Pay vs Performance Disclosure [Table] Pay vs Performance [Table Text Block] PEO Total Compensation Amount Non-PEO NEO Average Total Compensation Amount PEO Actually Paid Compensation Amount Non-PEO NEO Average Compensation Actually Paid Amount Total Shareholder Return Amount Peer Group Issuers, Footnote [Text Block] Changed Peer Group, Footnote [Text Block] Peer Group Total Shareholder Return Amount Company Selected Measure Amount Company Selected Measure Name Measure [Axis] Measure Name Adjustment to Compensation [Axis] All Adjustments to Compensation [Member] Adjustment to Compensation Amount Named Executive Officers, Footnote [Text Block] PEO Name Adjustment To PEO Compensation, Footnote [Text Block] Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Compensation Actually Paid vs. Total Shareholder Return [Text Block] Compensation Actually Paid vs. Net Income [Text Block] Compensation Actually Paid vs. Company Selected Measure [Text Block] Total Shareholder Return Vs Peer Group [Text Block] Tabular List [Table Text Block] Executive Category [Axis] All Executive Categories [Member] PEO [Member] Non-PEO NEO [Member] Individual [Axis] All Individuals [Member] Non-NEOs [Member] Award Timing Disclosure [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Award Timing Method Award Timing Method [Text Block] Award Timing Predetermined Award Timing Predetermined [Flag] Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Insider Trading Policies and Procedures [Line Items] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Equity Awards Adjustments [Member] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net Income (Loss) Assets Cover [Abstract] Document Type Amendment Flag Entity Registrant Name Entity Central Index Key Minimum amount of assets as of the balance sheet date recognized by the Peer Group. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Assets of Peer Group, Minimum Maximum amount of assets as of the balance sheet date recognized by the Peer Group. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Assets of Peer Group, Maximum Median amount of assets as of the balance sheet date recognized by the Peer Group. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Assets of Peer Group, Median Number of companies included in the Peer Group. Number of Companies Included in Peer Group Mark A Gooch [Member] Mark A Gooch [Member] Jean R Hale [Member] Jean R Hale [Member]