Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest income
Loans and lease financing	$ 105,701	$ 104,526	$ 210,058	$ 203,360
Available-for-sale securities	19,453	18,718	36,012	37,316
Other	1,907	1,184	4,803	1,959
Total interest income	127,061	124,428	250,873	242,635
Interest expense
Deposits	6,541	5,422	12,970	10,966
Short-term borrowings and long-term debt	93	64	164	116
Total interest expense	6,634	5,486	13,134	11,082
Net interest income	120,427	118,942	237,739	231,553
Provision for loan and lease losses	1,900	2,250	2,600	4,850
Net interest income after provision for loan and lease losses	118,527	116,692	235,139	226,703
Noninterest income
Service charges on deposit accounts	9,395	9,992	19,184	20,215
Credit and debit card fees	13,810	13,946	27,629	27,775
Other service charges and fees	8,914	10,081	18,141	19,735
Trust and investment services income	7,323	7,496	14,728	15,238
Bank-owned life insurance	3,792	2,344	6,148	5,399
Investment securities gains, net	3	5,859	25,731	10,862
Other	3,134	2,397	8,329	8,489
Total noninterest income	46,371	52,115	119,890	107,713
Noninterest expense:
Salaries and employee benefits	41,955	42,068	86,656	84,294
Contracted services and professional fees	9,939	10,902	22,694	21,232
Occupancy	4,809	5,465	10,121	10,249
Equipment	4,116	3,635	7,943	7,101
Regulatory assessment and fees	2,846	2,387	5,323	4,720
Advertising and marketing	1,425	1,490	3,049	2,829
Card rewards program	2,729	4,831	6,231	8,411
Other	10,654	10,437	21,520	21,094
Total noninterest expense	78,473	81,215	163,537	159,930
Income before income taxes	86,425	87,592	191,492	174,486
Provision for income taxes	31,565	33,034	71,101	65,806
Net income	$ 54,860	$ 54,558	$ 120,391	$ 108,680
Basic earnings per share (in dollars per share)	$ 0.39	$ 0.39	$ 0.86	$ 0.78
Diluted earnings per share (in dollars per share)	$ 0.39	$ 0.39	$ 0.86	$ 0.78
Basic and diluted weighted-average outstanding shares	139,459,620	139,459,620	139,459,620	139,459,620