CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' 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	324	0	0	$ 0	324
Common stock issued for RSUs vested (in shares)	311
Common stock issued for RSUs vested	$ 3	(3)	0	0	0	0
Shares withheld to pay taxes	0	(45)	0	0	0	(45)
Foreign currency translation adjustment	0	0	0	20	0	20
Net income (loss)	0	0	(8,407)	0		(8,407)
Balance at Jun. 30, 2020	$ 221	79,676	(63,061)	(1,826)	$ (2,999)	12,011
Balance (in shares) at Jun. 30, 2020	22,150				(1,599)
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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 0	177	0	0	$ 0	177
Common stock issued for RSUs vested (in shares)	171
Common stock issued for RSUs vested	$ 2	(2)	0	0	0	0
Shares withheld to pay taxes	0	6	0	0	0	6
Foreign currency translation adjustment	0	0	0	206	0	206
Net income (loss)	0	0	(2,149)	0	0	(2,149)
Balance at Jun. 30, 2020	$ 221	79,676	(63,061)	(1,826)	$ (2,999)	12,011
Balance (in shares) at Jun. 30, 2020	22,150				(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	501	0	0	$ 0	501
Common stock issued for RSUs vested (in shares)	268
Common stock issued for RSUs vested	$ 3	(3)	0	0	0	0
Shares withheld to pay taxes	0	(161)	0	0	0	(161)
Foreign currency translation adjustment	0	0	0	1,132	0	1,132
Net income (loss)	0	0	1,026	0	0	1,026
Balance at Jun. 30, 2021	$ 225	80,024	(64,165)	(82)	$ (2,999)	13,003
Balance (in shares) at Jun. 30, 2021	22,461				(1,599)
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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 0	463	0	0	$ 0	463
Common stock issued for RSUs vested (in shares)	227
Common stock issued for RSUs vested	$ 3	(2)	0	0	0	1
Shares withheld to pay taxes	0	(134)	0	0	0	(134)
Foreign currency translation adjustment	0	0	0	26	0	26
Net income (loss)	0	0	3,231	0	0	3,231
Balance at Jun. 30, 2021	$ 225	$ 80,024	$ (64,165)	$ (82)	$ (2,999)	$ 13,003
Balance (in shares) at Jun. 30, 2021	22,461				(1,599)