CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Cumulative Effect of New Accounting Principle in Period of Adoption			$ 655			$ 655
Balance (Scenario, Previously Reported [Member]) at Dec. 31, 2017			(42,870)			29,672
Balance at Dec. 31, 2017	$ 210	$ 76,802		$ (1,471)	$ (2,999)	$ 29,672
Balance (in shares) at Dec. 31, 2017	21,024,395				(1,598,911)	19,425,484
Stock-based compensation expense		595				$ 595
Common stock issued for options exercised (in shares)	109,513
Common stock issued for options exercised	$ 1	56				57
Common stock issued for RSUs vested (in shares)	81,976
Common stock issued for RSUs vested	$ 1	(1)				0
Vested RSU shares withheld to pay taxes		(76)				(76)
Foreign currency translation adjustment				(45)		(45)
Net income			(1,496)			(1,496)
Balance at Mar. 31, 2018	$ 212	$ 77,376	$ (43,711)	$ (1,516)	$ (2,999)	$ 29,362
Balance (in shares) at Mar. 31, 2018	21,215,884				(1,598,911)	19,616,973