Accrued Payroll Costs And Retirement Obligations (Employee Retirement Obligations) (Details) (Chief Executive Officer [Member], USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Chief Executive Officer [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Deferred compensation plan and other benefits related to the Company's Chief Executive Officer	$ 70,563	$ 67,891