Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Interest income
Loans and leases	$ 182,201	$ 226,812	$ 579,115	$ 696,813
Investment securities:
U. S. Treasury	392	559	1,355	1,968
Government agency	2,809	3,692	9,203	12,401
Residential mortgage-backed securities	6,415	4,792	15,500	8,883
Corporate bonds	0	278	0	2,319
State, county and municipal	2	6	10	30
Other	78	108	231	301
Total investment securities interest and dividend income	9,696	9,435	26,299	25,902
Overnight investments	737	427	1,750	1,230
Total interest income	192,634	236,674	607,164	723,945
Interest expense
Deposits	7,923	13,850	27,233	45,369
Short-term borrowings	744	1,114	2,128	4,089
Long-term obligations	4,784	6,354	14,210	22,747
Total interest expense	13,451	21,318	43,571	72,205
Net interest income	179,183	215,356	563,593	651,740
Provision for loan and lease losses	(7,683)	17,623	(39,531)	78,005
Net interest income after provision for loan and lease losses	186,866	197,733	603,124	573,735
Noninterest income
Cardholder and merchant services	12,791	11,505	35,887	33,540
Merchant Discount Fees	14,887	13,220	42,619	38,332
Service charges on deposit accounts	15,546	15,549	45,428	45,456
Wealth management services	15,112	14,129	44,724	42,414
Fees from processing services	4,539	9,521	15,209	25,640
Securities gains (losses)	0	31	0	(11)
Other service charges and fees	4,043	3,377	11,775	10,392
Mortgage income	2,277	1,619	9,734	4,718
Insurance commissions	2,772	2,568	8,146	7,562
ATM income	1,316	1,263	3,798	3,999
Adjustments for FDIC receivable for loss share agreements	(23,298)	(16,858)	(61,790)	(57,788)
Other	21,933	(4,082)	38,896	1,827
Total noninterest income	71,918	51,842	194,426	156,081
Noninterest expense
Salaries and wages	76,463	76,675	228,384	229,145
Employee benefits	21,889	18,741	70,136	59,548
Occupancy expense	18,844	18,860	56,117	55,467
Equipment expense	18,822	17,983	56,466	54,147
FDIC insurance expense	2,706	2,016	7,795	7,739
Foreclosure-related expenses	4,287	7,255	12,059	27,248
Other	49,132	48,547	144,108	134,911
Total noninterest expense	192,143	190,077	575,065	568,205
Income before income taxes	66,641	59,498	222,485	161,611
Income taxes	25,659	19,974	82,012	49,009
Net income	$ 40,982	$ 39,524	$ 140,473	$ 112,602
Average shares outstanding (in shares)	9,618,941	10,264,159	9,618,955	10,273,082
Net income per share	$ 4.26	$ 3.85	$ 14.60	$ 10.96