Consolidated Statement of Changes in Deficit - USD ($) shares in Thousands, $ in Thousands	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Deficit	Non-Controlling Interest	Accumulated Other Comprehensive Income (Loss)	Total
Beginning balance at Dec. 31, 2016	$ 58	$ (325)	$ 128,884	$ (130,615)	$ (536)	$ (14)	$ (2,548)
Beginning balance, shares at Dec. 31, 2016	5,760
Stock-based employee compensation			143				143
Write-off of interest in Chinese joint venture					536	14	550
Net loss				(1,947)			(1,947)
Ending balance at Dec. 31, 2017	$ 58	(325)	129,027	(132,562)			(3,802)
Ending balance, shares at Dec. 31, 2017	5,760
Stock-based employee compensation			224				224
Net loss				(1,027)			(1,027)
Ending balance at Dec. 31, 2018	$ 58	$ (325)	$ 129,251	$ (133,589)			$ (4,605)
Ending balance, shares at Dec. 31, 2018	5,760