CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid- in Capital	Accumulated Deficit
Beginning balance at Dec. 31, 2018	$ 36,278	$ 10		$ 41,052	$ (4,784)
Beginning balances, shares at Dec. 31, 2018		10,266,613
Vesting of restricted stock units		$ 1		(1)
Vesting of restricted stock units, Shares		686,049
Increase in treasury stock resulting from shares withheld to cover statutory taxes	(1,255)		$ (1,255)
Increase in treasury stock resulting from shares withheld to cover statutory taxes, Shares			(103,147)
Issuance of common stock upon direct offering to certain investors, net of issuance costs of $55	7,436	$ 1		7,435
Issuance of common stock upon direct offering to certain investors, net of costs, Shares		681,000
Share-based compensation	5,816			5,816
Net loss	(6,220)				(6,220)
Ending balance at Sep. 30, 2019	42,055	$ 12	$ (1,255)	54,302	(11,004)
Ending balances, shares at Sep. 30, 2019		11,633,662	(103,147)
Beginning balance at Jun. 30, 2019	35,251	$ 10		45,253	(10,012)
Beginning balances, shares at Jun. 30, 2019		10,286,613
Vesting of restricted stock units		$ 1		(1)
Vesting of restricted stock units, Shares		666,049
Increase in treasury stock resulting from shares withheld to cover statutory taxes	(1,255)		$ (1,255)
Increase in treasury stock resulting from shares withheld to cover statutory taxes, Shares			(103,147)
Issuance of common stock upon direct offering to certain investors, net of issuance costs of $55	7,436	$ 1		7,435
Issuance of common stock upon direct offering to certain investors, net of costs, Shares		681,000
Share-based compensation	1,615			1,615
Net loss	(992)				(992)
Ending balance at Sep. 30, 2019	42,055	$ 12	$ (1,255)	54,302	(11,004)
Ending balances, shares at Sep. 30, 2019		11,633,662	(103,147)
Beginning balance at Dec. 31, 2019	42,084	$ 12	$ (1,255)	59,187	(15,860)
Beginning balances, shares at Dec. 31, 2019		11,657,912	(103,147)
Vesting of restricted stock units		$ 1		(1)
Vesting of restricted stock units, Shares		713,753
Increase in treasury stock resulting from shares withheld to cover statutory taxes	(1,828)		$ (1,828)
Increase in treasury stock resulting from shares withheld to cover statutory taxes, Shares			(121,608)
Share-based compensation	7,896			7,896
Net loss	(4,938)				(4,938)
Ending balance at Sep. 30, 2020	43,214	$ 13	$ (3,083)	67,082	(20,798)
Ending balances, shares at Sep. 30, 2020		12,371,665	(224,755)
Beginning balance at Jun. 30, 2020	43,690	$ 12	$ (1,255)	64,806	(19,873)
Beginning balances, shares at Jun. 30, 2020		11,707,829	(103,147)
Vesting of restricted stock units		$ 1		(1)
Vesting of restricted stock units, Shares		663,836
Increase in treasury stock resulting from shares withheld to cover statutory taxes	(1,828)		$ (1,828)
Increase in treasury stock resulting from shares withheld to cover statutory taxes, Shares			(121,608)
Share-based compensation	2,277			2,277
Net loss	(925)				(925)
Ending balance at Sep. 30, 2020	$ 43,214	$ 13	$ (3,083)	$ 67,082	$ (20,798)
Ending balances, shares at Sep. 30, 2020		12,371,665	(224,755)