Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	In treasury	Additional Paid-In Capital	Retained Earnings / Accumulated Deficit	Total
Beginning Balance, Shares at Dec. 31, 2016	17,274
Beginning Balance, Treasury stock shares at Dec. 31, 2016		(1,120)
Beginning Balance, Amount at Dec. 31, 2016	$ 6,509	$ (10,340)	$ 2,198	$ 49,995	$ 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 loss				(346)	(346)
Ending Balance, Shares at Dec. 31, 2017	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	46,590
Treasury stock purchased, Shares		(218)
Treasury stock purchased, Amount		$ (1,379)			(1,379)
Issuance of common stock in connection with stock-based compensation, shares		24
Issuance of common stock in connection with stock-based compensation		$ 221	(89)		132
Share-based compensation			148		148
Net loss				(3,086)	(3,086)
Ending Balance, Shares at Dec. 31, 2018	17,274
Ending Balance, Treasury stock shares at Dec. 31, 2018		(1,460)
Ending Balance, Amount at Dec. 31, 2018	$ 6,509	$ (12,970)	$ 2,303	$ 46,563	$ 42,405