Condensed Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Common Stock	Capital deficiency	Accumulated earnings (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			2,795		2,795
Shares issued under stock-based compensation plans (in shares)	25,663
Stock-based compensation		659			659
Components of comprehensive (loss) income:
Net loss			(30,115)		(30,115)
Currency translation adjustment				3,896	3,896
Ending balance at Sep. 30, 2018	$ 11	(112,422)	(28,686)	(1,242)	(142,339)
Ending balance (in shares) at Sep. 30, 2018	11,160,377
Beginning balance at Jun. 30, 2018	$ 11	(112,377)	(22,571)	(5,323)	(140,260)
Beginning balance (in shares) at Jun. 30, 2018	11,159,714
Shares issued under stock-based compensation plans (in shares)	663
Stock-based compensation		(45)			(45)
Components of comprehensive (loss) income:
Net loss			(6,115)		(6,115)
Currency translation adjustment				4,081	4,081
Ending balance at Sep. 30, 2018	$ 11	(112,422)	(28,686)	(1,242)	(142,339)
Ending balance (in shares) at Sep. 30, 2018	11,160,377
Beginning balance at Dec. 31, 2018	$ 11	(112,223)	(36,004)	(1,360)	$ (149,576)
Beginning 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		293			$ 293
Components of comprehensive (loss) income:
Net loss			(2,217)		(2,217)
Currency translation adjustment				31	31
Reclassification adjustment to foreign currency loss				$ 1,329	1,329
Ending balance at Sep. 30, 2019	$ 11	(111,930)	(38,221)		$ (150,140)
Ending balance (in shares) at Sep. 30, 2019	11,224,191				11,224,191
Beginning balance at Jun. 30, 2019	$ 11	(111,939)	(37,537)		$ (149,465)
Beginning balance (in shares) at Jun. 30, 2019	11,223,528
Shares issued under stock-based compensation plans (in shares)	663
Stock-based compensation		9			9
Components of comprehensive (loss) income:
Net loss			(684)		(684)
Ending balance at Sep. 30, 2019	$ 11	$ (111,930)	$ (38,221)		$ (150,140)
Ending balance (in shares) at Sep. 30, 2019	11,224,191				11,224,191