Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Interest income
Loans and lease financing	$ 106,900	$ 100,234	$ 316,958	$ 303,594
Available-for-sale securities	21,123	17,750	57,135	55,066
Other	1,311	1,120	6,114	3,079
Total interest income	129,334	119,104	380,207	361,739
Interest expense
Deposits	6,632	5,504	19,602	16,470
Short-term borrowings and long-term debt	19	50	183	166
Total interest expense	6,651	5,554	19,785	16,636
Net interest income	122,683	113,550	360,422	345,103
Provision for loan and lease losses	2,100	2,550	4,700	7,400
Net interest income after provision for loan and lease losses	120,583	111,000	355,722	337,703
Noninterest income
Service charges on deposit accounts	9,575	10,441	28,759	30,656
Credit and debit card fees	14,103	13,858	41,732	41,633
Other service charges and fees	8,768	9,916	26,909	29,651
Trust and investment services income	7,508	7,372	22,236	22,610
Bank-owned life insurance	7,115	1,898	13,263	7,297
Investment securities gains, net	30	4,131	25,761	14,993
Other	1,591	8,886	9,920	17,375
Total noninterest income	48,690	56,502	168,580	164,215
Noninterest expense:
Salaries and employee benefits	42,106	42,696	128,762	126,990
Contracted services and professional fees	10,430	10,964	33,124	32,196
Occupancy	4,870	4,077	14,991	14,326
Equipment	4,192	3,885	12,135	10,986
Regulatory assessment and fees	3,546	2,404	8,869	7,124
Advertising and marketing	1,769	1,199	4,818	4,028
Card rewards program	4,512	3,503	10,743	11,914
Other	11,379	10,649	32,899	31,743
Total noninterest expense	82,804	79,377	246,341	239,307
Income before income taxes	86,469	88,125	277,961	262,611
Provision for income taxes	33,234	33,236	104,335	99,042
Net income	$ 53,235	$ 54,889	$ 173,626	$ 163,569
Basic earnings per share (in dollars per share)	$ 0.38	$ 0.39	$ 1.24	$ 1.17
Diluted earnings per share (in dollars per share)	0.38	0.39	1.24	1.17
Dividends declared per share	$ 0.20	$ 0.00	$ 0.42	$ 0.00
Basic weighted-average outstanding shares (in shares)	139,500,542	139,459,620	139,473,360	139,459,620
Diluted weighted-average outstanding shares (in shares)	139,503,558	139,459,620	139,474,373	139,459,620