Parent Company Only Financials (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
INCOME
Interest income on notes receivable	$ 595,965	$ 582,739	$ 608,487
Total income	939,282	885,950	969,241
EXPENSE
Personnel expense	381,404	360,144	325,063
Income (loss) before income tax benefit and equity in undistributed net income (loss)	254,459	183,427	(41,028)
Income tax expense (benefit)	75,486	43,728	(40,172)
Net income (loss)	178,973	139,699	(856)
Preferred stock dividends and discount accretion	(5,200)	(24,830)	(29,531)
Net income (loss) available to common equity	173,773	114,869	(30,387)
Parent Company [Member]
INCOME
Dividends from subsidiaries	169,500	0	4,000
Management and service fees from subsidiaries	0	54,242	47,238
Interest income on notes receivable	1,807	2,306	4,951
Other Income	5,762	5,289	1,181
Total income	177,069	61,837	57,370
EXPENSE
Interest expense on short and long-term funding	37,066	39,072	30,608
Personnel expense	36	38,258	34,652
Other expense	12,873	16,603	21,210
Total expense	(49,975)	(93,933)	(86,470)
Income (loss) before income tax benefit and equity in undistributed net income (loss)	127,094	(32,096)	(29,100)
Income tax expense (benefit)	(17,948)	(17,788)	(7,137)
Income (loss) before equity in undistributed net income of subsidiaries	145,042	(14,308)	(21,963)
Equity in undistributed net income (loss) of subsidiaries	33,931	154,007	21,107
Net income (loss)	178,973	139,699	(856)
Preferred stock dividends and discount accretion	(5,200)	(24,830)	(29,531)
Net income (loss) available to common equity	$ 173,773	$ 114,869	$ (30,387)