Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Interest income
Loans and leases	$ 161,034	$ 211,763
Investment securities:
Total investment securities interest and dividend income	11,748	8,484
Overnight investments	612	357
Total interest income	173,394	220,604
Interest expense
Deposits	6,825	10,313
Short-term borrowings	585	704
Long-term obligations	5,053	4,705
Total interest expense	12,463	15,722
Net interest income	160,931	204,882
Provision for loan and lease losses	(1,903)	(18,606)
Net interest income after provision for loan and lease losses	162,834	223,488
Noninterest income
Cardholder and merchant services	11,832	11,071
Merchant Discount Fees	13,521	12,486
Service charges on deposit accounts	14,440	14,999
Wealth management services	14,880	14,515
Fees from processing services	4,861	5,619
Other service charges and fees	3,944	3,766
Mortgage income	955	3,788
Insurance commissions	3,287	2,980
ATM income	1,202	1,168
Adjustments for FDIC receivable for loss share agreements	(12,349)	(24,053)
Other	4,608	11,174
Total noninterest income	61,181	57,513
Noninterest expense
Salaries and wages	79,874	76,119
Employee benefits	20,100	25,019
Occupancy expense	20,425	18,809
Equipment expense	18,791	18,946
FDIC insurance expense	2,636	2,666
Foreclosure-related expenses	5,410	4,305
Other	43,794	48,491
Total noninterest expense	191,030	194,355
Income before income taxes	32,985	86,646
Income taxes	10,619	31,061
Net income	$ 22,366	$ 55,585
Average shares outstanding (in shares)	9,618,941	9,618,985
Net income per share	$ 2.33	$ 5.78