Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Beginning Balance at Dec. 31, 2014	$ 24,795	$ 16,392	$ 53,203	$ (5,893)	$ 88,497
Beginning Balance (in shares) at Dec. 31, 2014	4,959,009
Comprehensive income:
Net income	$ 0	0	3,634	0	3,634
Other comprehensive income, net of tax	0	0	0	2,731	2,731
Cash dividends	0	0	(1,686)	0	(1,686)
Ending Balance at Dec. 31, 2015	$ 24,795	16,392	55,151	(3,162)	$ 93,176
Ending Balance (in shares) at Dec. 31, 2015	4,959,009				4,959,009
Comprehensive income:
Net income	$ 0	0	3,797	0	$ 3,797
Other comprehensive income, net of tax	0	0	0	(1,046)	(1,046)
Stock Issued During Period, Value, Stock Options Exercised	$ 6	19	0	0	$ 25
Exercise of stock options (in shares)	1,250				1,250
Stock Issued During Period, Value, Employee Stock Purchase Plan	$ 5	16	0	0	$ 21
Stock Issued During Period, Shares, Employee Stock Purchase Plans	999
Cash dividends	$ 0	0	(1,983)	0	(1,983)
Ending Balance at Dec. 31, 2016	$ 24,806	$ 16,427	$ 56,965	$ (4,208)	$ 93,990
Ending Balance (in shares) at Dec. 31, 2016	4,961,258				4,961,258