Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	In treasury	Additional Paid-In Capital	Retained Earnings / Accumulated Deficit	Other Comprehensive Income / Loss	Total
Beginning Balance, Shares issued at Dec. 31, 2015	17,274
Beginning Balance, Treasury stock shares at Dec. 31, 2015		(1,064)
Beginning Balance, Amount at Dec. 31, 2015	$ 6,509	$ (9,730)	$ 2,033	$ 46,516	$ (71)	$ 45,257
Other comprehensive income					71	71
Treasury stock purchased, Shares		(69)
Treasury stock purchased, Amount		$ (738)				(738)
Issuance of common stock in connection with stock-based compensation, shares		12
Issuance of common stock in connection with stock-based compensation		$ 117	12			129
Issuance of common stock on exercise of stock options, shares		1
Issuance of common stock on exercise of stock options, value		$ 11	18			29
Share-based compensation			135			135
Net income (loss)				3,479		$ 3,479
Ending Balance, Shares issued at Dec. 31, 2016	17,374					17,274
Ending Balance, Treasury stock shares at Dec. 31, 2016		(1,120)
Ending Balance, Amount at Dec. 31, 2016	$ 6,509	$ (10,340)	2,198	49,995	0	$ 48,362
Treasury stock purchased, Shares		(148)
Treasury stock purchased, Amount		$ (1,486)				(1,486)
Issuance of common stock in connection with stock-based compensation, shares		2
Issuance of common stock in connection with stock-based compensation		$ 14	(14)
Share-based compensation			60			60
Net income (loss)				(346)		$ (346)
Ending Balance, Shares issued at Dec. 31, 2017	17,274					17,274
Ending Balance, Treasury stock shares at Dec. 31, 2017		(1,266)
Ending Balance, Amount at Dec. 31, 2017	$ 6,509	$ (11,812)	$ 2,244	$ 49,649	$ 0	$ 46,590