CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest income
Loans, including fees	$ 90,980	$ 77,170	$ 61,014
Securities
Taxable	5,916	6,317	5,811
Nontaxable	3,830	3,770	3,679
Federal funds sold and interest-bearing deposits	1,835	1,201	1,278
Total interest income	102,561	88,458	71,782
Interest expense
Deposits	21,611	16,941	10,604
FHLB advances and federal funds purchased	1,389	1,865	472
Subordinated debentures	648	687	724
Other borrowed money	43	49	352
Total interest expense	23,691	19,542	12,152
Net interest income	78,870	68,916	59,630
Provision for loan losses	1,250	2,250	2,850
Net interest income after provision for loan losses	77,620	66,666	56,780
Noninterest income
Service charges	3,715	3,600	3,746
Net realized (loss) gain on securities transactions	(22)	(50)	167
Net realized gain on sale of loans	2,850	2,308	1,981
Other income	10,419	9,445	8,385
Total noninterest income	16,962	15,303	14,279
Noninterest expense
Employee compensation and benefits	35,907	32,122	27,078
Occupancy expenses	9,834	8,398	7,400
Other expenses	16,784	16,254	13,904
Total noninterest expense	62,525	56,774	48,382
Income before income taxes	32,057	25,195	22,677
Income tax provision	5,778	4,599	8,238
Net earnings	$ 26,279	$ 20,596	$ 14,439
Basic earnings per share (in USD per share)	$ 2.26	$ 1.78	$ 1.41
Diluted earnings per share (in USD per share)	$ 2.25	$ 1.77	$ 1.40