Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest income:
Interest and fees on loans	$ 56,073	$ 45,983	$ 110,754	$ 90,545
Interest on mortgage-backed securities	4,782	3,910	9,177	7,804
Interest and dividends on investment securities:
Taxable	6	85	123	162
Tax-exempt	1,130	1,141	2,262	2,284
Other interest income	343	384	844	754
Total interest income	62,334	51,503	123,160	101,549
Interest expense:
Interest on deposits	3,341	2,204	6,416	4,322
Interest on senior debt	2,121	1,175	4,242	2,117
Interest on Federal Home Loan Bank advances	1,797	1,124	3,655	2,172
Interest on federal funds purchased and securities sold under agreements to repurchase	235	162	436	344
Interest on trust preferred borrowings	472	397	918	768
Interest on other borrowings	54	27	76	56
Total interest expense	8,020	5,089	15,743	9,779
Net interest income	54,314	46,414	107,417	91,770
Provision for loan losses	1,843	1,254	4,005	2,034
Net interest income after provision for loan losses	52,471	45,160	103,412	89,736
Noninterest income:
Credit/debit card and ATM income	8,925	7,253	17,056	14,154
Investment management and fiduciary income	8,835	6,282	16,874	11,536
Deposit service charges	4,560	4,342	8,957	8,618
Mortgage banking activities, net	1,844	1,816	3,029	3,470
Securities gains, net	708	545	1,028	850
Loan fee income	451	480	1,000	957
Bank owned life insurance income	302	211	578	442
Other income	6,051	4,578	11,246	9,149
Total non interest income	31,676	25,507	59,768	49,176
Noninterest expense:
Salaries, benefits and other compensation	28,223	23,509	57,059	46,385
Occupancy expense	4,684	3,955	9,846	8,225
Equipment expense	3,498	2,516	6,622	4,989
Professional fees	2,669	2,934	4,304	5,337
Data processing and operations expenses	1,750	1,522	3,368	3,064
Marketing expense	932	801	1,556	1,465
Loan workout and OREO expenses	499	45	1,020	548
FDIC expenses	594	773	1,123	1,611
Corporate development expense	366	549	704	1,118
Other operating expense	9,512	8,081	18,631	15,741
Total non interest expenses	52,727	44,685	104,233	88,483
Income before taxes	31,420	25,982	58,947	50,429
Income tax provision	10,850	8,504	19,440	17,181
Net income	$ 20,570	$ 17,478	$ 39,507	$ 33,248
Earnings per share:
Basic (in dollars per share)	$ 0.65	$ 0.59	$ 1.26	$ 1.12
Diluted (in dollars per share)	$ 0.64	$ 0.58	$ 1.22	$ 1.10