CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 35,961	$ 29,677	$ 19,539
Adjustments to reconcile net income to net cash provided by operating activities:
Loss (gain) on sales of securities	198	(2)	(500)
Gain on sale of loans	0	0	(3)
Loss on disposal of fixed assets	28	16	136
Gain on sale of foreclosed assets	(107)	(1,423)	(56)
Writedown of foreclosed assets	77	439	95
Share-based compensation expense	490	373	476
Provision (benefit) for loan losses	2,550	4,350	(1,140)
Depreciation and amortization	2,988	3,174	3,030
Net amortization on securities premiums and discounts	4,449	5,452	6,749
Accretion of discounts for loans acquired and net deferred loan fees	(1,023)	(1,647)	(1,384)
Increase in cash surrender value of life insurance policies	(2,184)	(591)	(1,640)
Amortization of core deposit intangible	1,074	1,020	508
(Increase) decrease in interest receivable and other assets	(9,224)	(6,106)	10,402
Increase (decrease) in other liabilities	9,662	(5,420)	4,100
Deferred income tax benefit	(97)	(308)	(1,130)
Increase in equity securities	(232)	(1,183)	0
Net amortization of partnership investment	2,127	2,625	1,497
Net cash provided by operating activities	46,737	30,446	40,679
Cash flows from investing activities:
Maturities and calls of securities available for sale	9,809	9,730	9,493
Proceeds from sales of securities available for sale	60,510	6,838	40,166
Purchases of securities available for sale	(190,168)	(122,818)	(179,092)
Principal paydowns on securities available for sale	92,766	92,494	100,161
Net purchases of FHLB stock	(833)	(300)	(1,689)
Loan originations and payments, net	(32,376)	(183,737)	(76,129)
Purchases of premises and equipment, net	(783)	(3,123)	(2,141)
Proceeds from sales of fixed assets	10	0	0
Proceeds from sales of foreclosed assets	7,955	13,188	443
Purchase of bank owned life insurance	(440)	(454)	(455)
Liquidation of bank-owned life insurance	260	0	0
Proceeds from BOLI death benefit	0	0	999
Net increase in partnership investment	0	0	(5,000)
Net cash from bank acquisition	0	(6)	61,571
Net cash used in investing activities	(53,290)	(188,188)	(51,673)
Cash flows from financing activities:
Increase in deposits	52,034	127,954	35,304
Increase (decrease) in borrowed funds	(36,100)	34,200	(67,500)
Increase (decrease) in repurchase agreements	9,352	8,209	56
Cash dividends paid	(11,332)	(9,757)	(7,935)
Repurchases of common stock	(2,544)	0	0
Stock options exercised	1,088	1,131	764
Net cash provided by financing activities	12,498	161,737	(39,311)
(Decrease) increase in cash and due from banks	5,945	3,995	(50,305)
Cash and cash equivalents, beginning of year	74,132	70,137	120,442
Cash and cash equivalents, end of year	80,077	74,132	70,137
Supplemental disclosure of cash flow information:
Interest	13,769	8,707	5,000
Income taxes	12,000	11,300	7,147
Supplemental noncash disclosures:
Real estate acquired through foreclosure	27	7,805	666
Change in unrealized net gains (losses) on securities available-for-sale	17,884	(6,156)	(269)
Operating right-of-use asset pursuant to adoption on ASU 2016-02	8,308	0	0
Operating lease liability pursuant to adoption of ASU 2016-02	8,915	0	0
Assets acquired (liabilities assumed) in bank acquisition:
Cash and cash equivalents	0	0	62,374
Securities	0	0	5,492
Loans	0	0	217,807
Premises and equipment	0	0	1,342
Foreclosed assets	0	0	3,072
Core deposit intangibles	0	0	3,939
Goodwill	0	0	19,089
Other assets	0	0	10,479
Deposits	0	0	(257,611)
Other liabilities	0	0	(3,404)
Borrowings	0	0	(24,400)
Subordinated debentures	$ 0	$ 0	$ 0