Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest income
Loans and lease financing	$ 146,883	$ 130,283	$ 291,289	$ 253,834
Available-for-sale securities	24,784	27,397	49,270	56,390
Other	2,151	1,339	5,820	3,731
Total interest income	173,818	159,019	346,379	313,955
Interest expense
Deposits	23,693	17,355	46,890	32,619
Short-term and long-term borrowings	4,512	261	8,787	261
Total interest expense	28,205	17,616	55,677	32,880
Net interest income	145,613	141,403	290,702	281,075
Provision for loan and lease losses	3,870	6,020	9,550	11,970
Net interest income after provision for loan and lease losses	141,743	135,383	281,152	269,105
Noninterest income
Service charges on deposit accounts	8,123	7,721	16,183	15,676
Credit and debit card fees	16,629	16,929	33,284	32,426
Other service charges and fees	9,403	9,633	18,532	18,975
Trust and investment services income	8,931	7,711	17,549	15,942
Bank-owned life insurance	3,390	2,395	7,203	4,439
Investment securities gains (losses), net	21		(2,592)
Other	2,276	5,408	5,686	11,039
Total noninterest income	48,773	49,797	95,845	98,497
Noninterest expense
Salaries and employee benefits	42,185	41,636	87,045	83,796
Contracted services and professional fees	14,303	13,005	27,948	25,292
Occupancy	7,286	6,908	14,272	13,392
Equipment	4,544	4,335	8,828	8,923
Regulatory assessment and fees	2,149	4,225	3,596	8,198
Advertising and marketing	1,980	1,115	3,946	2,066
Card rewards program	7,664	6,359	14,396	12,077
Other	13,179	14,282	25,882	28,708
Total noninterest expense	93,290	91,865	185,913	182,452
Income before provision for income taxes	97,226	93,315	191,084	185,150
Provision for income taxes	24,793	24,262	48,727	48,139
Net income	$ 72,433	$ 69,053	$ 142,357	$ 137,011
Basic earnings per share (in dollars per share)	$ 0.54	$ 0.50	$ 1.06	$ 0.99
Diluted earnings per share (in dollars per share)	$ 0.54	$ 0.50	$ 1.06	$ 0.99
Basic weighted-average outstanding shares (in shares)	134,420,380	137,907,063	134,655,217	138,749,209
Diluted weighted-average outstanding shares (in shares)	134,652,008	138,065,879	134,924,331	138,891,955