CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Interest and fees on loans	$ 64,442	$ 56,073	$ 124,907	$ 110,754
Interest on mortgage-backed securities	6,190	4,782	11,589	9,177
Interest and dividends on investment securities:
Taxable	16	6	33	123
Tax-exempt	1,092	1,130	2,195	2,262
Other interest income	411	343	1,040	844
Total interest income	72,151	62,334	139,764	123,160
Interest expense:
Interest on deposits	6,368	3,341	11,608	6,416
Interest on senior debt	1,180	2,121	2,359	4,242
Interest on Federal Home Loan Bank advances	2,536	1,797	4,999	3,655
Interest on federal funds purchased and securities sold under agreements to repurchase	434	235	880	436
Interest on trust preferred borrowings	637	472	1,194	918
Interest on other borrowings	7	54	21	76
Total interest expense	11,162	8,020	21,061	15,743
Net interest income	60,989	54,314	118,703	107,417
Provision for loan losses	2,498	1,843	6,148	4,005
Net interest income after provision for loan losses	58,491	52,471	112,555	103,412
Noninterest income:
Securities gains, net	0	708	21	1,028
Unrealized gains on equity investments	0	0	15,346	0
Bank owned life insurance income	0	302	232	578
Total non interest income	34,987	31,676	82,454	59,768
Noninterest expense:
Salaries, benefits and other compensation	30,944	28,223	60,797	57,059
Occupancy expense	5,008	4,684	10,256	9,846
Equipment expense	3,176	3,498	6,265	6,622
Data processing and operations expenses	1,896	1,750	3,803	3,368
Professional fees	2,320	2,669	4,045	4,304
Marketing expense	1,084	932	1,842	1,556
FDIC expenses	515	594	1,114	1,123
Loan workout and OREO expenses	681	499	1,107	1,020
Corporate development expense	457	366	457	704
Recovery of fraud loss	0	0	(1,665)	0
Other operating expense	11,750	9,512	23,222	18,631
Total non interest expenses	57,831	52,727	111,243	104,233
Income before taxes	35,647	31,420	83,766	58,947
Income tax provision	6,907	10,850	17,676	19,440
Net income	$ 28,740	$ 20,570	$ 66,090	$ 39,507
Earnings per share:
Basic (in dollars per share)	$ 0.91	$ 0.65	$ 2.10	$ 1.26
Diluted (in dollars per share)	$ 0.89	$ 0.64	$ 2.05	$ 1.22
Credit/debit card and ATM income
Noninterest income:
Deposit service charges	$ 10,709	$ 8,925	$ 20,514	$ 17,056
Investment management and fiduciary income
Noninterest income:
Deposit service charges	10,244	8,835	19,433	16,874
Deposit service charges
Noninterest income:
Deposit service charges	4,664	4,560	9,294	8,957
Mortgage banking activities, net
Noninterest income:
Deposit service charges	1,692	1,844	3,429	3,029
Loan fee income
Noninterest income:
Deposit service charges	567	451	1,166	1,000
Other income
Noninterest income:
Deposit service charges	$ 7,111	$ 6,051	$ 13,019	$ 11,246