Change in Fair Value of RSUs from Prior Years that Vested in the Covered Year [Member] Represents the change in fair value of RSUs from prior years that vested in the covered year. Fair Value of RSU Granted and Vested in the Covered Year [Member] Represents the fair value of RSU granted and vested in the covered year. Change in Fair Value of Unvested RSUs from the Prior Years [Member] Represents the change in fair value of unvested RSUs from the prior years. Fair Value of Restricted Shares Units (RSU) Granted in the Covered Year [Member] Represents the fair value of restricted share units RSU granted in the covered year. Change in Fair Value of Unvested RSUs from Covered Years [Member] Represents the change in far value of unvested RSUs from covered years.