CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid- in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
BALANCE at Dec. 31, 2017	$ 63,774	$ 129	$ (5,017)	$ 346,322	$ (277,597)	$ (63)
BALANCE (in Shares) at Dec. 31, 2017		12,492
Retrospective adoption of Topic 606	1,502				1,502
Share based compensation	1,687			1,687
Stock issued upon option exercise	156			156
Stock issued upon option exercise (in Shares)		28
Stock issued, net of issuance cost (in Shares)		2,762
Stock issued, net of issuance cost	43,790	$ 28		43,762
Net income (loss)	(7,548)				(7,548)
Other comprehensive income	(843)					(843)
BALANCE at Dec. 31, 2018	102,518	$ 157	(5,017)	391,927	(283,643)	(906)
BALANCE (in Shares) at Dec. 31, 2018		15,282
Share based compensation	2,268			2,268
Stock issued upon option exercise	$ 848	$ 2		846
Stock issued upon option exercise (in Shares)	143	204
Stock issued under the employee stock purchase plan	$ 508	$ 1		507
Stock issued under the employee stock purchase plan (in Shares)		105
Stock issued upon acquisition (in Shares)		123
Stock issued upon acquisition	555	$ 1		554
Net income (loss)	30,001				30,001
Disposal of discontinued operations	1,472					1,472
Other comprehensive income	(591)					(591)
BALANCE at Dec. 31, 2019	$ 137,579	$ 161	$ (5,017)	$ 396,102	$ (253,642)	$ (25)
BALANCE (in Shares) at Dec. 31, 2019		15,714