Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred income tax assets
Net operating loss carryforward	$ 510,350	$ 590,938
Provision losses on loans	136,510	179,916
Tax credit carryforward	45,767	44,563
Deferred revenue	15,474	12,253
Share-based compensation	12,414	13,303
Net unrealized losses on investment securities available for sale	9,776	0
Other	48,852	27,990
Total gross deferred income tax assets	779,143	868,963
Less valuation allowance	(14,575)	(18,658)
Total deferred income tax assets	764,568	850,305
Deferred income tax liabilities
Excess tax over financial statement depreciation	(8,210)	(13,945)
Ownership interest in partnership	(5,961)	(2,721)
Net unrealized gain on investment securities available for sale	0	(19,051)
Other	(5,751)	(8,182)
Total gross deferred income tax liabilities	(19,922)	(43,899)
Net deferred income tax assets	$ 744,646	$ 806,406