PEO 1 [Member] Reported Value of Equity Awards [Member] Equity Award Adjustments [Member] Year End Fair Value Of Equity Awards [Member] Year Over Change In Fair Value Of Outstanding And Unvested Equity Awards [Member] Year Over Year Change In Fair Value Of Equity Awards Granted In Prior Years That Vestedinthe Year [Member] Value Of Dividends Or Other Earnings Paid On Stock Or Option Awards Not Otherwise Reflected In Fair Value Or Total Compensation [Member] Total Equity Award Adjustments [Member] Average Reported Value Of Equity Awards [Member] Average Equity Award Adjustments [Member] Average Year End Fair Value of Equity Awards [Member] Year over Year Average Change in Fair Value of Outstanding and Unvested Equity Awards [Member] Year over Year Average Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year [Member] Average Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation [Member] Total Average Equity Award Adjustments [Member] Cover [Abstract] Document Type Entity Registrant Name Entity Central Index Key Document Period End Date Amendment Flag Amendment Description PEO 2 [Member] PEO 1 [Member] Reported Value of Equity Awards. Equity Award Adjustments. Reported Value of Equity Awards. Average Reported Value of Equity Awards. Average Equity Award Adjustments. Year End Fair Value of Equity Awards [Member] Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards [Member] Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year [Member] Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation [Member] Total Equity Award Adjustments [Member] Average Year End Fair Value of Equity Awards [Member] Year over Year Average Change in Fair Value of Outstanding and Unvested Equity Awards [Member] Year over Year Average Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year [Member] Average Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation [Member] Total Average Equity Award Adjustments [Member] Equity Award Adjustments [Member] Average Reported Value Of Equity Awards [Member] Average Equity Award Adjustments [Member] Total Average Equity Award Adjustments [TableTextBlock] Equity Award Adjustments [Table Text Block] Reported Value of Equity Awards [Member]