CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2019	$ 218	$ 79,400	$ (54,654)	$ (1,846)	$ (2,999)	$ 20,119
Balance (in shares) at Dec. 31, 2019	21,839				(1,599)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 0	147	0	0	$ 0	147
Common stock issued for RSUs vested (in shares)	140
Common stock issued for RSUs vested	$ 1	(1)	0	0	0	0
Shares withheld to pay taxes	0	(51)	0	0	0	(51)
Foreign currency translation adjustment	0	0	0	(186)	0	(186)
Net loss	0	0	(6,258)	0	0	(6,258)
Balance at Mar. 31, 2020	$ 219	79,495	(60,912)	(2,032)	$ (2,999)	13,771
Balance (in shares) at Mar. 31, 2020	21,979				(1,599)
Balance at Dec. 31, 2020	$ 222	79,687	(65,191)	(1,214)	$ (2,999)	10,505
Balance (in shares) at Dec. 31, 2020	22,193				(1,599)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 0	38	0	0	$ 0	38
Common stock issued for RSUs vested (in shares)	41
Common stock issued for RSUs vested	$ 0	0	0	0	0	0
Shares withheld to pay taxes		(28)	0	0	0	(28)
Foreign currency translation adjustment	0	0	0	1,106	0	1,106
Net loss	0	0	(2,205)	0	0	(2,205)
Balance at Mar. 31, 2021	$ 222	$ 79,697	$ (67,396)	$ (108)	$ (2,999)	$ 9,416
Balance (in shares) at Mar. 31, 2021	22,234				(1,599)