Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Cash Flows [Abstract]
Net income	$ 25,525	$ 23,536	$ 19,588
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,938	1,792	1,864
Change in deferred taxes	336	(485)	2,083
Provision for loan losses	1,250	1,500	2,000
Loans originated for resale	(37,721)	(25,447)	(39,039)
Proceeds from sales and transfers of loans	38,218	26,323	40,172
Net gain on sales of loans	(651)	(490)	(737)
Net gain on sale or call of securities	(224)	(137)	(471)
Net amortization of investment premiums	1,082	1,820	3,212
Net gain on sale of other real estate owned	(113)	(312)	(84)
Provision for losses on other real estate owned	0	0	17
Equity compensation expense	565	381	392
Net (increase) decrease in other assets and accrued interest	(7,690)	1,146	(4,817)
Net increase (decrease) in other liabilities	2,802	3,848	(2,020)
Net (gain) loss on disposal of premises and equipment	386	136	(108)
Amortization of investments in limited partnerships	307	186	178
Net acquisition amortization	43	43	43
Net cash provided by operating activities	26,053	33,840	22,273
Cash flows from investing activities
(Increase) decrease in interest-bearing deposits in other banks	769	(11,219)	(567)
Proceeds from sales of securities available for sale	8,339	459	15,587
Proceeds from maturities, payments, calls of securities available for sale	78,825	51,752	156,969
Proceeds from maturities, payments, calls and sales of securities held to maturity	24,087	14,094	14,770
Proceeds from sales of other real estate owned	418	1,350	607
Purchases of securities available for sale	(98,257)	(76,893)	(177,409)
Purchases of securities to be held to maturity	(71,857)	(13,159)	(44,334)
Purchase of Federal Home Loan Bank Stock	0	(1,228)	0
Redemption of restricted equity securities	2,604	0	1,572
Net increase in loans	(59,635)	(75,751)	(95,199)
Capital expenditures	(1,573)	(1,484)	(2,529)
Proceeds from sale of premises and equipment	0	2	473
Net cash used in investing activities	(116,280)	(112,077)	(130,060)
Cash flows from financing activities
Net increase in demand, savings, and money market accounts	24,811	75,798	88,372
Net increase in certificates of deposit	98,570	32,408	82,381
Advances on long-term borrowings	0	0	50,000
Repayment on long-term borrowings	(25,362)	(80,000)	(70,000)
Net increase (decrease) in short-term borrowings	0	61,559	(30,143)
Payment to repurchase common stock	(183)	(168)	(154)
Proceeds from sale of common stock	653	619	632
Dividends paid	(12,963)	(12,052)	(11,460)
Net cash provided by financing activities	85,526	78,164	109,628
Net increase (decrease) in cash and cash equivalents	(4,701)	(73)	1,841
Cash and cash equivalents at beginning of year	19,134	19,207	17,366
Cash and cash equivalents at end of year	14,433	19,134	19,207
Interest paid	26,088	20,104	13,366
Income taxes paid	3,994	3,057	5,730
Non-cash transactions:
Net transfer from loans to other real estate owned	$ 0	$ 610	$ 1,177