Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income
Loans and lease financing	$ 118,986	$ 106,900	$ 342,431	$ 316,958
Available-for-sale securities	24,195	21,123	75,683	57,135
Other	2,089	1,311	4,096	6,114
Total interest income	145,270	129,334	422,210	380,207
Interest expense
Deposits	11,949	6,632	28,279	19,602
Short-term borrowings and long-term debt	2	19	13	183
Total interest expense	11,951	6,651	28,292	19,785
Net interest income	133,319	122,683	393,918	360,422
Provision for loan and lease losses	4,500	2,100	13,400	4,700
Net interest income after provision for loan and lease losses	128,819	120,583	380,518	355,722
Noninterest income
Service charges on deposit accounts	9,095	9,575	28,062	28,759
Credit and debit card fees	14,831	14,103	43,467	41,732
Other service charges and fees	8,510	8,768	25,717	26,909
Trust and investment services income	7,672	7,508	22,536	22,236
Bank-owned life insurance	3,119	7,115	10,624	13,263
Investment securities gains, net		30		25,761
Other	5,308	1,591	16,406	9,920
Total noninterest income	48,535	48,690	146,812	168,580
Noninterest expense
Salaries and employee benefits	41,579	42,106	128,136	128,762
Contracted services and professional fees	10,834	10,430	33,530	33,124
Occupancy	5,844	4,870	16,188	14,991
Equipment	4,174	4,192	12,898	12,135
Regulatory assessment and fees	3,668	3,546	11,192	8,869
Advertising and marketing	2,005	1,769	5,255	4,818
Card rewards program	4,703	4,512	13,832	10,743
Other	10,848	11,379	32,204	32,899
Total noninterest expense	83,655	82,804	253,235	246,341
Income before provision for income taxes	93,699	86,469	274,095	277,961
Provision for income taxes	35,336	33,234	102,097	104,335
Net income	$ 58,363	$ 53,235	$ 171,998	$ 173,626
Basic earnings per share (in dollars per share)	$ 0.42	$ 0.38	$ 1.23	$ 1.24
Diluted earnings per share (in dollars per share)	0.42	0.38	1.23	1.24
Dividends declared per share (in dollars per share)	$ 0.22	$ 0.20	$ 0.66	$ 0.42
Basic weighted-average outstanding shares (in shares)	139,556,532	139,500,542	139,549,665	139,473,360
Diluted weighted-average outstanding shares (in shares)	139,696,330	139,503,558	139,670,487	139,474,373