Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash Flows From Operating Activities
Net income	$ 8,511	$ 7,878	$ 7,694
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	1,255	1,080	976
Provision for loan losses	150	550	345
Deferred income tax provision (benefit)	566	341	(37)
Net amortization of investment securities	384	214	105
Equity in losses of limited partnerships	565	484	800
Stock based compensation expense	66	35	20
Net increase in unamortized loan costs	(134)	(160)	(185)
Proceeds from sales of loans held for sale	138,443	134,578	96,989
Origination of loans held for sale	(137,713)	(126,599)	(101,795)
Net gains on sales of loans held for sale	(2,898)	(2,871)	(2,097)
Net loss on disposals of premises and equipment	13	7	19
Net gains on sales of investment securities available-for-sale	(71)	(53)	(315)
Write-downs of impaired assets	0	42	23
Net gains on sales of other real estate owned	0	(29)	(134)
(Increase) decrease in accrued interest receivable	(427)	22	(191)
Amortization of core deposit intangible	171	171	171
(Increase) decrease in other assets	(1,202)	(1,387)	1,849
Contribution to defined benefit pension plan	(750)	0	0
Increase (decrease) in other liabilities	715	(1,173)	(2,033)
Net cash provided by operating activities	7,644	13,130	2,204
Interest bearing deposits in banks
Proceeds from maturities and redemptions	4,244	3,579	10,423
Purchases	(996)	(4,080)	(5,062)
Investment securities held-to-maturity
Proceeds from maturities, calls and paydowns	4,220	2,000	6,000
Purchases	0	0	(2,000)
Investment securities available-for-sale
Proceeds from sales	6,620	11,540	7,420
Proceeds from maturities, calls and paydowns	9,754	7,020	4,307
Purchases	(29,098)	(27,416)	(21,921)
Purchase of nonmarketable stock	(1,143)	(269)	0
Redemption of nonmarketable stock	722	389	0
Net increase in loans	(32,947)	(20,713)	(19,369)
Recoveries of loans charged off	59	83	42
Purchases of premises and equipment	(1,938)	(2,289)	(2,170)
Investments in limited partnerships	(948)	(32)	(354)
Purchase of Company-owned life insurance	0	(5,000)	0
Proceeds of Company-owned life insurance death benefit	527	0	0
Proceeds from sales of other real estate owned	0	342	536
Proceeds from sales of premises and equipment	200	0	0
Net cash used in investing activities	(40,724)	(34,846)	(22,148)
Cash Flows From Financing Activities
Advances of long-term borrowings	25,451	0	0
Repayment of long-term debt	(2,898)	(294)	(3,589)
Net (decrease) increase in short-term borrowings outstanding	(522)	(5,260)	5,491
Net increase in noninterest bearing deposits	12,558	9,441	3,138
Net increase in interest bearing deposits	71,880	7,481	33,108
Net decrease in time deposits	(47,186)	(8,578)	(2,536)
Issuance of common stock	56	53	39
Purchase of treasury stock	(6)	(94)	(45)
Dividends paid	(4,939)	(4,816)	(4,637)
Net cash provided by (used in) financing activities	54,394	(2,067)	30,969
Net increase (decrease) in cash and cash equivalents	21,314	(23,783)	11,025
Cash and cash equivalents
Beginning of year	17,961	41,744	30,719
End of year	39,275	17,961	41,744
Supplemental Disclosures of Cash Flow Information
Interest paid	2,239	2,060	2,146
Income taxes paid	1,505	2,040	1,945
Supplemental Schedule of Noncash Investing and Financing Activities
Other real estate acquired in settlement of loans	0	59	464
Loans originated to finance the sale of other real estate owned	0	0	300
Investment in limited partnerships acquired by capital contributions payable	27	0	151
Dividends paid on Common Stock
Dividends declared	4,949	4,816	4,637
Dividends reinvested	(10)	0	0
Dividends paid on Common Stock	$ 4,939	$ 4,816	$ 4,637