Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest income:
Loans, including fees	$ 924,639	$ 1,019,036	$ 1,170,941
Investment securities available for sale	68,440	108,328	131,664
Trading account assets	963	925	843
Mortgage loans held for sale	6,201	6,195	8,654
Federal Reserve Bank balances	3,451	6,660	7,986
Other erning assets	446	612	493
Total interest income	1,004,140	1,141,756	1,320,581
Interest expense:
Deposits	95,749	173,885	288,327
Federal funds purchased and securities sold under repurchase agreements	614	1,063	1,921
Long-term debt	53,660	42,654	44,000
Total interest expense	150,023	217,602	334,248
Net interest income	854,117	924,154	986,333
Provision for loan losses	320,369	418,795	1,131,274
Net interest income (expense) after provision for loan losses	533,748	505,359	(144,941)
Non-interest income:
Service charges on deposit accounts	78,203	78,770	105,114
Fiduciary and asset management fees	42,503	45,809	44,142
Brokerage revenue	26,913	26,006	28,184
Mortgage banking income	32,272	20,316	33,334
Bankcard fees	34,075	41,493	41,420
Investment securities gains (losses), net	39,142	75,007	(1,271)
Other fee income	21,138	19,953	21,129
Increase (decrease) in fair value of private equity investments, net	8,233	(1,118)	7,203
Other non-interest income	31,487	32,638	26,092
Total non-interest income	313,966	338,874	305,347
Non-interest expense:
Salaries and other personnel expense	375,872	371,148	418,629
Net occupancy and equipment expense	105,575	114,037	122,046
FDIC insurance and other regulatory fees	45,408	59,063	69,480
Foreclosed real estate expense, net	90,655	133,570	163,630
(Gains) losses on other loans held for sale, net	4,681	(2,737)	3,050
Professional fees	41,307	40,585	45,554
Data processing expense	33,440	35,757	45,478
Visa indemnification charge (recovery)	6,304	6,038
Restructuring charges	5,412	30,665	5,538
Loss (gain) on curtailment of post-retirement health benefit	0	398	(7,092)
Other operating expenses	107,583	115,241	143,263
Total non-interest expense	816,237	903,765	1,009,576
Loss from continuing operations before income taxes	31,477	(59,532)	(849,170)
Income tax expense (benefit)	(798,732)	1,312	(15,151)
Loss from continuing operations	830,209	(60,844)	(834,019)
Income from discontinued operations, net of income taxes	0	0	43,162
Net income (loss)	830,209	(60,844)	(790,857)
Net (loss) income available to non-controlling interest	0	(220)	(179)
Net loss attributable to controlling interest	830,209	(60,624)	(790,678)
Dividends and accretion of discount on preferred stock	58,703	58,088	57,510
Net loss attributable to common shareholders	$ 771,506	$ (118,712)	$ (848,188)
Net income (loss) per common share, basic:
Net income (loss) from continuing operations attributable to common shareholders (per share)	$ 0.98	$ (0.15)	$ (1.30)
Net income (loss) attributable to common shareholders (per share)	$ 0.98	$ (0.15)	$ (1.24)
Net income (loss) per common share, diluted:
Net income (loss) from continuing operations attributable to common shareholders (per share)	$ 0.85	$ (0.15)	$ (1.30)
Net income (loss) attributable to common shareholders (per share)	$ 0.85	$ (0.15)	$ (1.24)
Weighted average common shares outstanding, basic	786,466	785,272	685,186
Weighted average common shares outstanding, diluted	910,102	785,272	685,186