Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Interest income
Loans and leases	$ 185,151	$ 231,864	$ 396,914	$ 470,001
Investment securities:
U. S. Treasury	467	670	963	1,409
Government agency	3,068	4,377	6,394	8,709
Residential mortgage-backed securities	4,506	2,202	9,085	4,091
Corporate bonds	0	842	0	2,041
State, county and municipal	2	12	8	24
Other	76	62	153	193
Total investment securities interest and dividend income	8,119	8,165	16,603	16,467
Overnight investments	656	490	1,013	803
Total interest income	193,926	240,519	414,530	487,271
Interest expense
Deposits	8,997	15,047	19,310	31,519
Short-term borrowings	680	1,584	1,384	2,975
Long-term obligations	4,721	8,456	9,426	16,393
Total interest expense	14,398	25,087	30,120	50,887
Net interest income	179,528	215,432	384,410	436,384
Provision for loan and lease losses	(13,242)	29,667	(31,848)	60,382
Net interest income after provision for loan and lease losses	192,770	185,765	416,258	376,002
Noninterest income
Cardholder and merchant services	27,271	24,697	50,828	47,147
Service charges on deposit accounts	14,883	15,061	29,882	29,907
Wealth management services	15,097	14,530	29,612	28,285
Fees from processing services	5,051	7,557	10,670	16,119
Securities gains (losses)	0	3	0	(42)
Other service charges and fees	3,966	3,574	7,732	7,015
Mortgage income	3,669	175	7,457	3,099
Insurance commissions	2,394	2,238	5,374	4,994
ATM income	1,314	1,281	2,482	2,736
Adjustments for FDIC receivable for loss share agreements	(14,439)	(14,134)	(38,492)	(40,930)
Other	5,789	2,314	16,963	5,909
Total noninterest income	64,995	57,296	122,508	104,239
Noninterest expense
Salaries and wages	75,802	76,786	151,921	152,470
Employee benefits	23,228	20,558	48,247	40,807
Occupancy expense	18,464	18,000	37,273	36,607
Equipment expense	18,698	17,998	37,644	36,164
FDIC insurance expense	2,423	2,666	5,089	5,723
Foreclosure-related expenses	3,467	15,389	7,772	19,993
Other	46,485	43,400	94,976	86,364
Total noninterest expense	188,567	194,797	382,922	378,128
Income before income taxes	69,198	48,264	155,844	102,113
Income taxes	25,292	10,681	56,353	29,035
Net income	$ 43,906	$ 37,583	$ 99,491	$ 73,078
Average shares outstanding (in shares)	9,618,941	10,271,343	9,618,963	10,277,593
Net income per share	$ 4.56	$ 3.66	$ 10.34	$ 7.11