Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest income
Loans and leases	$ 224,631	$ 164,259	$ 658,175	$ 489,401
Investment securities:
Total investment securities interest and dividend income	24,020	12,707	65,136	36,902
Overnight investments	1,174	655	4,037	2,023
Total interest income	249,825	177,621	727,348	528,326
Interest expense
Deposits	5,216	5,703	16,379	18,534
Short-term borrowings	590	2,694	4,182	4,830
Long-term obligations	4,648	3,002	12,601	12,111
Total interest expense	10,454	11,399	33,162	35,475
Net interest income	239,371	166,222	694,186	492,851
Provision (credit) for loan and lease losses	107	1,537	13,618	(7,665)
Net interest income after provision for loan and lease losses	239,264	164,685	680,568	500,516
Noninterest income
Gain on acquisition	0	0	42,930	0
Cardholder services	19,588	13,248	57,203	38,337
Merchant services	22,005	15,556	62,955	44,112
Service charges on deposit accounts	23,153	15,489	67,572	45,194
Wealth management services	22,223	15,657	64,658	46,352
Fees from processing services	45	7,303	140	17,846
Securities gains (losses)	5,564	0	10,837	0
Other service charges and fees	6,163	4,001	17,303	12,195
Mortgage income	4,852	1,164	14,972	3,329
Insurance commissions	2,945	2,422	8,698	7,962
ATM income	1,800	1,199	5,289	3,661
Adjustments for FDIC receivable for loss share agreements	(4,130)	(4,386)	(9,730)	(32,030)
Other	5,542	6,946	25,126	20,544
Total noninterest income	109,750	78,599	367,953	207,502
Noninterest expense
Salaries and wages	108,992	81,825	324,358	243,017
Employee benefits	27,121	19,797	86,341	59,638
Occupancy expense	22,260	20,265	73,412	60,975
Equipment expense	22,447	18,767	69,284	57,121
FDIC insurance expense	4,933	2,915	13,755	8,191
Foreclosure-related expenses	1,087	4,838	4,663	13,787
Merger-related expenses	3,679	1,505	11,249	7,352
Other	69,653	51,898	199,967	141,779
Total noninterest expense	260,172	201,810	783,029	591,860
Income before income taxes	88,842	41,474	265,492	116,158
Income taxes	32,884	14,973	97,854	40,492
Net income	$ 55,958	$ 26,501	$ 167,638	$ 75,666
Average shares outstanding (in shares)	12,010,405	9,618,941	12,010,405	9,618,941
Net income per share	$ 4.66	$ 2.76	$ 13.96	$ 7.87