Amendment Flag Year End Fair Value of Equity Awards Year End Fair Value of Equity Awards [Member] Year end fair value of equity awards. Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards 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. Equity Award Adjustments Equity Award Adjustments [Member] Equity award adjustments. Entity Registrant Name Document Type Entity Central Index Key Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in Year [Member] Year over year change in fair value of equity awards granted in prior years that vested in year. Cover [Abstract] Reported Value of Equity Awards Reported Value of Equity Awards [Member] Reported value of equity awards.