Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2018	$ 9	$ 23,966	$ (5,897)	$ (6,127)	$ 11,951
Balance (in shares) at Dec. 31, 2018	8,726,045
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss				(1,032)	(1,032)
Stock-based compensation		12			12
Foreign currency translation adjustment			4,766		4,766
Pension adjustment, net of taxes			1,145		1,145
Balance at Dec. 31, 2019	$ 9	23,978	14	(7,159)	$ 16,842
Balance (in shares) at Dec. 31, 2019	8,726,045				8,726,045
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss				(2,986)	$ (2,986)
Stock-based compensation		3			3
Balance at Dec. 31, 2020	$ 9	$ 23,981	$ 14	$ (10,145)	$ 13,859
Balance (in shares) at Dec. 31, 2020	8,726,045				8,726,045