Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2012	5,517,966
Balance at Dec. 31, 2012	$ 552	$ 3,739	$ 30,218	$ (627)	$ 33,882
Stock options exercised, net of surrendered shares (in shares)	112,231
Stock options exercised, net of surrendered shares	$ 11	761			772
Dividends declared ($0.42 per share)			$ (2,450)		(2,450)
Share-based compensation expense		512			512
Tax benefit on stock plans		$ 52			52
Net income			$ 3,461		3,461
Cumulative translation adjustment				$ 1,240	1,240
Balance (in shares) at Dec. 31, 2013	5,630,197
Balance at Dec. 31, 2013	$ 563	$ 5,064	$ 31,229	$ 613	37,469
Stock options exercised, net of surrendered shares (in shares)	102,308
Stock options exercised, net of surrendered shares	$ 10	692			702
Dividends declared ($0.42 per share)			$ (2,500)		(2,500)
Share-based compensation expense		591			591
Tax benefit on stock plans		$ 80			80
Net income			$ 1,536		1,536
Cumulative translation adjustment				$ (3,405)	$ (3,405)
Balance (in shares) at Dec. 31, 2014	5,732,505				5,732,505
Balance at Dec. 31, 2014	$ 573	$ 6,427	$ 30,265	$ (2,792)	$ 34,473
Stock options exercised, net of surrendered shares (in shares)	59,621
Stock options exercised, net of surrendered shares	$ 6	309			315
Dividends declared ($0.42 per share)			$ (2,536)		(2,536)
Share-based compensation expense		668			668
Tax benefit on stock plans		$ 8			8
Net income			$ 2,972		2,972
Cumulative translation adjustment				$ (2,429)	$ (2,429)
Balance (in shares) at Dec. 31, 2015	5,792,126				5,792,126
Balance at Dec. 31, 2015	$ 579	$ 7,412	$ 30,700	$ (5,220)	$ 33,471