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			2,796		2,796
Shares issued under stock-based compensation plans (in shares)	25,000
Stock-based compensation		704			704
Components of comprehensive (loss) income:
Net income (loss)			(24,001)		(24,001)
Currency translation adjustment				(185)	(185)
Ending balance at Jun. 30, 2018	$ 11	(112,377)	(22,571)	(5,323)	(140,260)
Ending balance (in shares) at Jun. 30, 2018	11,159,714
Beginning balance at Mar. 31, 2018	$ 11	(112,740)	(5,862)	(4,829)	(123,420)
Beginning balance (in shares) at Mar. 31, 2018	11,134,714
Shares issued under stock-based compensation plans (in shares)	25,000
Stock-based compensation		363			363
Components of comprehensive (loss) income:
Net income (loss)			(16,709)		(16,709)
Currency translation adjustment				(494)	(494)
Ending balance at Jun. 30, 2018	$ 11	(112,377)	(22,571)	(5,323)	(140,260)
Ending balance (in shares) at Jun. 30, 2018	11,159,714
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)	63,151
Stock-based compensation		284			$ 284
Components of comprehensive (loss) income:
Net income (loss)			(1,533)		(1,533)
Currency translation adjustment				31	31
Reclassification adjustment to foreign currency loss				1,329	1,329
Ending balance at Jun. 30, 2019	$ 11	(111,939)	(37,537)		$ (149,465)
Ending balance (in shares) at Jun. 30, 2019	11,223,528				11,223,528
Beginning balance at Mar. 31, 2019	$ 11	(112,091)	(39,059)	(1,329)	$ (152,468)
Beginning balance (in shares) at Mar. 31, 2019	11,160,537
Shares issued under stock-based compensation plans (in shares)	62,991
Stock-based compensation		152			152
Components of comprehensive (loss) income:
Net income (loss)			1,522		1,522
Reclassification adjustment to foreign currency loss				$ 1,329	1,329
Ending balance at Jun. 30, 2019	$ 11	$ (111,939)	$ (37,537)		$ (149,465)
Ending balance (in shares) at Jun. 30, 2019	11,223,528				11,223,528