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] 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] Additional 402(v) Disclosure [Text Block] Net Income (Loss) Cover [Abstract] Document Type Amendment Flag Entity Registrant Name Entity Central Index Key Adjustment for stock compensation per Summary Compensation Table. Stock Compensation Per Summary Compensation Table [Member] Adjustment for change in value of prior period stock compensation. Change in Value of Prior Period Stock Compensation [Member] Adjustment for pension service costs. Pension Service Costs [Member] Adjustment for change in pension value per Summary Compensation Table. Change in Pension Value Per Summary Compensation Table [Member]