Cover [Abstract] Document Type Amendment Flag Entity Registrant Name Entity Central Index Key Stock awards total in summary compensation table. Stock Awards Total in Summary Compensation Table [Member] 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] Fair value as of the vesting date of equity awards that vested during the year. Fair Value as of the Vesting Date of Equity Awards that Vested During the Year [Member]