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:
Interest and fees on loans	$ 58,504	$ 49,849	$ 169,258	$ 140,394
Interest on mortgage-backed securities	4,955	3,854	14,132	11,658
Interest and dividends on investment securities:
Taxable	14	80	137	242
Tax-exempt	1,125	1,134	3,387	3,418
Other interest income	412	420	1,256	1,174
Total interest income	65,010	55,337	188,170	156,886
Interest expense:
Interest on deposits	3,862	2,412	10,278	6,734
Interest on senior debt	1,807	2,119	6,049	4,236
Interest on Federal Home Loan Bank advances	2,402	1,225	6,057	3,397
Interest on federal funds purchased and securities sold under agreements to repurchase	273	113	709	457
Interest on trust preferred borrowings	500	415	1,418	1,183
Interest on other borrowings	37	32	113	88
Total interest expense	8,881	6,316	24,624	16,095
Net interest income	56,129	49,021	163,546	140,791
Provision for loan losses	2,896	5,828	6,901	7,862
Net interest income after provision for loan losses	53,233	43,193	156,645	132,929
Noninterest income:
Credit/debit card and ATM income	9,350	7,776	26,406	21,930
Investment management and fiduciary income	8,809	6,074	25,683	17,610
Deposit service charges	4,695	4,482	13,652	13,100
Mortgage banking activities, net	1,756	2,555	4,785	6,025
Securities gains, net	736	1,040	1,764	1,890
Loan fee income	483	542	1,483	1,499
Bank owned life insurance income	546	255	1,124	697
Other income	6,066	4,862	17,312	14,011
Total non interest income	32,441	27,586	92,209	76,762
Noninterest expense:
Salaries, benefits and other compensation	29,172	24,804	86,231	71,189
Occupancy expense	4,756	4,335	14,602	12,560
Equipment expense	2,922	2,653	9,544	7,642
Professional fees	2,248	1,554	6,552	6,891
Data processing and operations expenses	1,817	1,500	5,185	4,564
Marketing expense	712	712	2,268	2,177
Loan workout and OREO expenses	484	511	1,504	1,059
FDIC expenses	560	469	1,683	2,080
Early extinguishment of debt	695	0	695	0
Corporate development expense	153	5,885	857	7,003
Other operating expense	10,644	8,811	29,275	24,552
Total non interest expenses	54,163	51,234	158,396	139,717
Income before taxes	31,511	19,545	90,458	69,974
Income tax provision	10,942	6,823	30,382	24,004
Net income	$ 20,569	$ 12,722	$ 60,076	$ 45,970
Earnings per share:
Basic (in dollars per share)	$ 0.65	$ 0.42	$ 1.91	$ 1.54
Diluted (in dollars per share)	$ 0.64	$ 0.41	$ 1.86	$ 1.50