Fiscal Year-End Fair Value of Outstanding and Unvested Awards Granted in Fiscal Year [Member] Vesting Date Fair Value of Awards Granted and Vested During Fiscal Year [Member] Change in Fair Value of Outstanding and Unvested Awards Granted in Prior Fiscal Year [Member] Grant Date Fair Value of Awards Granted in Fiscal Year [Member] LeRoy T. Carlson, Jr. [Member] Walter C. D. Carlson [Member] Change in Fair Value of Awards Granted in Prior Fiscal Years that Vested During Fiscal Year [Member]