Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest income:
Loans	$ 70,917	$ 63,135	$ 139,918	$ 119,732
Mortgage-backed securities	3,946	4,297	7,987	7,982
Debt securities, equity investments and other	3,547	2,646	6,927	5,200
Total interest income	78,410	70,078	154,832	132,914
Interest expense:
Deposits	9,762	5,247	18,401	9,711
Borrowed funds	3,811	3,384	7,206	6,046
Total interest expense	13,573	8,631	25,607	15,757
Net interest income	64,837	61,447	129,225	117,157
Provision for loan losses	356	706	976	2,077
Net interest income after provision for loan losses	64,481	60,741	128,249	115,080
Other income:
Bankcard services revenue	2,679	2,373	4,964	4,292
Net gain on sales of loans	7	6	15	623
Net unrealized gain (loss) on equity investments	133	(71)	241	(212)
Net loss from other real estate operations	(121)	(981)	(127)	(1,393)
Income from Bank Owned Life Insurance	1,293	1,335	2,614	2,476
Other	724	486	1,506	1,044
Total other income	9,879	8,883	19,391	17,794
Operating expenses:
Compensation and employee benefits	23,704	23,244	46,118	44,495
Occupancy	4,399	4,572	8,929	9,139
Equipment	1,936	2,034	3,882	3,937
Marketing	1,137	893	2,067	1,454
Federal deposit insurance	802	1,000	1,634	1,930
Data processing	3,684	3,667	7,338	6,843
Check card processing	1,322	1,116	2,760	2,105
Professional fees	1,408	1,397	3,117	2,680
Other operating expense	3,882	3,546	7,251	6,561
Amortization of core deposit intangible	1,015	1,001	2,020	1,834
Branch consolidation expense	6,695	1,719	7,086	1,544
Merger related expenses	931	6,715	5,984	25,200
Total operating expenses	50,915	50,904	98,186	107,722
Income before provision for income taxes	23,445	18,720	49,454	25,152
Provision for income taxes	4,465	3,018	9,301	4,023
Net income	$ 18,980	$ 15,702	$ 40,153	$ 21,129
Basic earnings per share (in dollars per share)	$ 0.37	$ 0.33	$ 0.80	$ 0.46
Diluted earnings per share (in dollars per share)	$ 0.37	$ 0.32	$ 0.79	$ 0.45
Average basic shares outstanding (in usd per share)	50,687	47,718	50,115	45,805
Average diluted shares outstanding (in usd per share)	51,290	48,704	50,728	46,786
Trust and asset management revenue
Other income:
Other income	$ 569	$ 595	$ 1,067	$ 1,148
Fees and service charges
Other income:
Other income	$ 4,595	$ 5,140	$ 9,111	$ 9,816