CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	COMMON STOCK	ADDITIONAL PAID-IN CAPITAL	RETAINED EARNINGS	ACCUMULATED OTHER COMPREHENSIVE LOSS (INCOME)	TREASURY STOCK
Beginning Balance (in shares) at Dec. 31, 2015		5,004,984
Beginning Balance at Dec. 31, 2015	$ 136,279	$ 41,708	$ 49,992	$ 58,038	$ (3,799)	$ (9,660)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,078			3,078
Other comprehensive income	1,091				1,091
Dividends declared	(2,228)			(2,228)
Common shares issued for employee stock purchase plan (in shares)		550
Common shares issued for employee stock purchase plan	17	$ 5	12
Purchase of treasury stock	(574)					(574)
Ending Balance (in shares) at Mar. 31, 2016		5,005,534
Ending Balance at Mar. 31, 2016	137,663	$ 41,713	50,004	58,888	(2,708)	(10,234)
Beginning Balance (in shares) at Dec. 31, 2016		5,007,109
Beginning Balance at Dec. 31, 2016	138,249	$ 41,726	50,075	61,610	(4,928)	(10,234)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,686			2,686
Other comprehensive income	384				384
Dividends declared	(2,225)			(2,225)
Common shares issued for employee stock purchase plan (in shares)		460
Common shares issued for employee stock purchase plan	19	$ 3	16
Ending Balance (in shares) at Mar. 31, 2017		5,007,569
Ending Balance at Mar. 31, 2017	$ 139,113	$ 41,729	$ 50,091	$ 62,071	$ (4,544)	$ (10,234)