Change in fair value from vest date of awards granted in prior years that vest in the covered fiscal year [Member] Covered year change in fair value of awards granted in prior years that are unvested at yearend [Member] Prior yearend fair value of awards granted in prior years that failed to meet vesting in the covered fiscal year [Member] Value of Stock Awards [Member] Yearend fair value of awards granted in covered fiscal year that are unvested at yearend [Member]