Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest income:
Loans	$ 69,715	$ 64,497	$ 209,633	$ 184,229
Mortgage-backed securities	3,761	4,105	11,748	12,087
Debt securities, equity investments and other	3,411	2,780	10,338	7,980
Total interest income	76,887	71,382	231,719	204,296
Interest expense:
Deposits	9,817	5,799	28,218	15,510
Borrowed funds	3,678	4,079	10,884	10,125
Total interest expense	13,495	9,878	39,102	25,635
Net interest income	63,392	61,504	192,617	178,661
Provision for loan losses	305	907	1,281	2,984
Net interest income after provision for loan losses	63,087	60,597	191,336	175,677
Other income:
Bankcard services revenue	2,658	2,425	7,622	6,717
Net gain on sales of loans	0	31	15	654
Net unrealized gain (loss) on equity investments	89	(70)	330	(282)
Net loss from other real estate operations	(108)	(1,582)	(235)	(2,975)
Income from Bank Owned Life Insurance	1,431	1,337	4,045	3,813
Other	2,237	836	3,743	1,880
Total other income	11,543	8,285	30,934	26,079
Operating expenses:
Compensation and employee benefits	21,276	19,694	67,394	64,189
Occupancy	4,159	4,443	13,088	13,582
Equipment	2,062	2,067	5,944	6,004
Marketing	562	1,021	2,629	2,475
Federal deposit insurance and regulatory assessments	297	927	1,931	2,857
Data processing	3,398	3,125	10,736	9,968
Check card processing	1,639	799	4,399	2,904
Professional fees	2,580	1,066	5,697	3,746
Other operating expense	3,902	3,366	11,153	9,928
Amortization of core deposit intangible	1,009	995	3,029	2,828
Branch consolidation expense	1,696	1,368	8,782	2,911
Merger related expenses	777	662	6,761	25,863
Total operating expenses	43,357	39,533	141,543	147,255
Income before provision for income taxes	31,273	29,349	80,727	54,501
Provision for income taxes	6,302	5,278	15,603	9,301
Net income	$ 24,971	$ 24,071	$ 65,124	$ 45,200
Basic earnings per share (in dollars per share)	$ 0.50	$ 0.50	$ 1.30	$ 0.97
Diluted earnings per share (in dollars per share)	$ 0.49	$ 0.50	$ 1.28	$ 0.95
Average basic shares outstanding (in usd per share)	50,491	47,685	50,242	46,451
Average diluted shares outstanding (in usd per share)	50,966	48,572	50,830	47,403
Trust and asset management revenue
Other income:
Other income	$ 557	$ 573	$ 1,624	$ 1,721
Fees and service charges
Other income:
Other income	$ 4,679	$ 4,735	$ 13,790	$ 14,551