Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands		Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2019		$ 25	$ 5,037	$ (9,773)	$ 62,211	$ (1,081)	$ 56,419
Balance (in shares) at Dec. 31, 2019							9,022,187
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense		0	228	0	0	0	$ 228
Issuance of restricted stock		$ 0	0	0	0	0	0
Issuance of restricted stock (in shares)		20,804
Net income (loss)		$ 0	0	0	(1,738)	0	(1,738)
Foreign currency translation adjustments, net of tax		0	0	0	0	(346)	(346)
Balance at Mar. 31, 2020		25	5,265	(9,773)	60,473	(1,427)	$ 54,563
Balance (in shares) at Mar. 31, 2020							9,042,991
Balance at Dec. 31, 2019		25	5,037	(9,773)	62,211	(1,081)	$ 56,419
Balance (in shares) at Dec. 31, 2019							9,022,187
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	[1]						$ (4,495)
Foreign currency translation adjustments, net of tax							(83)
Balance at Sep. 30, 2020		25	5,666	(9,773)	57,716	(1,164)	$ 52,470
Balance (in shares) at Sep. 30, 2020							9,042,991
Balance at Mar. 31, 2020		25	5,265	(9,773)	60,473	(1,427)	$ 54,563
Balance (in shares) at Mar. 31, 2020							9,042,991
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense		0	183	0	0	0	$ 183
Net income (loss)		0	0	0	(1,775)	0	(1,775)
Foreign currency translation adjustments, net of tax		0	0	0	0	130	130
Balance at Jun. 30, 2020		25	5,448	(9,773)	58,698	(1,297)	$ 53,101
Balance (in shares) at Jun. 30, 2020							9,042,991
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense		0	218	0	0	0	$ 218
Net income (loss)		0	0	0	(982)	0	(982)	[1]
Foreign currency translation adjustments, net of tax		0	0	0	0	133	133
Balance at Sep. 30, 2020		25	5,666	(9,773)	57,716	(1,164)	$ 52,470
Balance (in shares) at Sep. 30, 2020							9,042,991
Balance at Dec. 31, 2020		25	5,924	(9,773)	57,310	(1,292)	$ 52,194
Balance (in shares) at Dec. 31, 2020							9,150,806
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense		0	183	0	0	0	$ 183
Issuance of restricted stock		$ 0	0	0	0	0	0
Issuance of restricted stock (in shares)		16,080
Repurchase of common stock		$ (1)	(1,674)		0	0	(1,675)
Repurchase of common stock (in shares)		(500,000)
Net income (loss)		$ 0	0	0	745	0	745
Foreign currency translation adjustments, net of tax		0	0	0	0	(33)	(33)
Balance at Mar. 31, 2021		24	4,433	(9,773)	58,055	(1,325)	$ 51,414
Balance (in shares) at Mar. 31, 2021							8,666,886
Balance at Dec. 31, 2020		25	5,924	(9,773)	57,310	(1,292)	$ 52,194
Balance (in shares) at Dec. 31, 2020							9,150,806
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)							$ 1,269
Foreign currency translation adjustments, net of tax							(54)
Balance at Sep. 30, 2021		24	4,828	(9,773)	58,579	(1,346)	$ 52,312
Balance (in shares) at Sep. 30, 2021							8,663,921
Balance at Mar. 31, 2021		24	4,433	(9,773)	58,055	(1,325)	$ 51,414
Balance (in shares) at Mar. 31, 2021							8,666,886
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense		0	204	0	0	0	$ 204
Purchase of vested stock for employee payroll tax withholding		$ 0	(15)	0	0	0	(15)
Purchase of vested stock for employee payroll tax withholding (in shares)		(2,965)
Net income (loss)		$ 0	0	0	540	0	540
Foreign currency translation adjustments, net of tax		0	0	0	0	69	69
Balance at Jun. 30, 2021		24	4,622	(9,773)	58,595	(1,256)	$ 52,212
Balance (in shares) at Jun. 30, 2021							8,663,921
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense		0	206	0	0	0	$ 206
Net income (loss)		0	0	0	(16)	0	(16)	[1]
Foreign currency translation adjustments, net of tax		0	0	0	0	(90)	(90)
Balance at Sep. 30, 2021		$ 24	$ 4,828	$ (9,773)	$ 58,579	$ (1,346)	$ 52,312
Balance (in shares) at Sep. 30, 2021							8,663,921

[1] For the three months ended September 30, 2021, there were 15,326 shares excluded from the diluted EPS calculation, and for the three and nine months ended September 30, 2020, there were 1,875 and 7,422 shares, respectively, excluded from the diluted EPS calculation because the impact of their assumed vesting would be anti-dilutive due to a net loss in those respective periods.