CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock	Additional paid in capital	Retained earnings	Accumulated other comprehensive income	Treasury stock
Beginning balance at Dec. 31, 2014	$ 31,376	$ 0	$ 40,672	$ 2,750	$ (109)	$ (11,937)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Charge related to stock-based compensation	592		592
Stock option exercises	28		(704)			732
Tax effect from exercise of stock options	(66)		(66)
Foreign currency translation	815				815
Pension obligations, net of tax of $11	(20)				(20)
Net income	5,839			5,839
Ending balance at Dec. 31, 2015	38,564	0	40,494	8,589	686	(11,205)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Charge related to stock-based compensation	690		690
Stock option exercises	39		(815)			854
Tax effect from exercise of stock options	(24)		(24)
Foreign currency translation	1,176				1,176
Pension obligations, net of tax of $11	(28)				(28)
Release of restricted stock	0		(1,881)			1,881
Repurchase of common stock	(274)		(274)
Declared dividends	(672)			(672)
Net income	(586)			(586)
Ending balance at Dec. 31, 2016	$ 38,885	$ 0	$ 38,190	$ 7,331	$ 1,834	$ (8,470)