CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at beginning at Dec. 31, 2014	$ 204	$ 110,391	$ (67,817)	$ (513)	$ 42,265
Balance at beginning (in shares) at Dec. 31, 2014	4,075,249
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation related to stock options and restricted stock		6,309			6,309
Registration costs		(84)			(84)
Restricted stock issued	$ 17				17
Restricted stock issued (in shares)	323,095
Other comprehensive loss				(1,256)	(1,256)
Loss			(34,554)		(34,554)
Balance at ending at Dec. 31, 2015	$ 221	116,616	(102,371)	(1,769)	$ 12,697
Balance at ending (in shares) at Dec. 31, 2015	4,398,344				4,398,344
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation related to stock options and restricted stock		1,969			$ 1,969
Restricted stock canceled
Restricted stock canceled (in shares)	(37,250)
Other comprehensive loss				(2,810)	(2,810)
Loss			(13,264)		(13,264)
Balance at ending at Dec. 31, 2016	$ 221	$ 118,585	$ (115,635)	$ (4,579)	$ (1,408)
Balance at ending (in shares) at Dec. 31, 2016	4,361,094				4,361,094