Quarterly Results (Unaudited) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Litigation Settlement, Expense					$ 15,000	$ 20,000
Payments for Legal Settlements		$ (5,700)	$ (26,900)
Loss on debt retirements					657	0	$ 8,584
Adjustment to self insurance reserves	$ (55,200)			$ (29,600)	(55,200)	(62,200)	69,300
Loan origination release	$ 11,800				11,800
Loss Contingency Accrual, Period Increase (Decrease)						32,600
Valuation allowance adjustment					44,200		215,420
Reserves provided					506	(11,433)	(18,604)
Home Office Relocation [Member]
Costs associated with the relocation of corporate headquarters					8,300	4,400	16,300
Home Office Relocation [Member] | Other Restructuring [Member]
Costs associated with the relocation of corporate headquarters					$ 7,300	$ 2,300	$ 8,700