Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	ASC 606 Accumulated loss	ASC 606	Common Stock	Capital deficiency	Accumulated loss	Accumulated other comprehensive loss	Total
Beginning balance at Dec. 31, 2017			$ 11	$ (113,081)	$ (1,366)	$ (5,138)	$ (119,574)
Beginning balance (in shares) at Dec. 31, 2017			11,134,714
Adoption of ASC 606	$ 2,824	$ 2,824
Shares issued under stock-based compensation plans (in shares)			25,663
Stock-based compensation				858			858
Components of comprehensive (loss) income:
Net loss					(37,462)		(37,462)
Other comprehensive loss from discontinued operations						3,983	3,983
Currency translation adjustment						(205)	(205)
Ending balance at Dec. 31, 2018			$ 11	(112,223)	(36,004)	(1,360)	$ (149,576)
Ending balance (in shares) at Dec. 31, 2018			11,160,377				11,160,377
Shares issued under stock-based compensation plans (in shares)			63,814
Stock-based compensation				235			$ 235
Components of comprehensive (loss) income:
Net loss					(4,454)		(4,454)
Reclassification adjustment to foreign currency loss						1,329	1,329
Currency translation adjustment						$ 31	31
Ending balance at Dec. 31, 2019			$ 11	$ (111,988)	$ (40,458)		$ (152,435)
Ending balance (in shares) at Dec. 31, 2019			11,224,191				11,224,191