Schedule of Shareholders' Equity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 116,570	$ 95,127	$ 104,758	$ 111,247	$ 95,127	$ 111,247
Shares issued through ATM	7,874	19,008
Shares issued for services		202
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees’ taxes	(15)	(12)	(11)	(2)
Shares issued upon exercise of stock options	4,033	1,751
Shares issues for retirement of stock warrants	2
Financing related fees	(26)	(173)	(10)
Stock-based compensation	919	539	606	626
Foreign currency translation loss	(960)	1,576	(1,120)	1,315	616	195
NET LOSS	(4,796)	(1,448)	(6,530)	(8,428)	(6,244)	(14,958)
Ending balance	123,601	116,570	97,693	104,758	123,601	97,693
Preferred Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance
Beginning balance, shares
Shares issued through ATM
Shares issued through ATM, shares
Shares issued for services
Shares issued for services, shares
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees’ taxes
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees taxes, shares
Shares issued upon exercise of stock options
Shares issued upon exercise of stock options, shares
Shares issues for retirement of stock warrants
Financing related fees
Stock-based compensation
Foreign currency translation loss
NET LOSS
Ending balance, shares
Ending balance
Common Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 415,259	$ 393,944	$ 387,686	$ 387,062	$ 393,944	$ 387,062
Beginning balance, shares	162,067	153,096	149,818	149,804	153,096	149,804
Shares issued through ATM	$ 7,874	$ 19,008
Shares issued through ATM, shares	2,824	7,941
Shares issued for services		$ 202
Shares issued for services, shares		78
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees’ taxes	$ (15)	$ (12)	$ (11)	$ (2)
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees taxes, shares	10	10	13	14
Shares issued upon exercise of stock options	$ 4,033	$ 1,751
Shares issued upon exercise of stock options, shares	2,116	942
Shares issues for retirement of stock warrants	$ 2
Shares issues for retirement of stock warrants, shares	20
Financing related fees	$ (26)	$ (173)	$ (10)
Stock-based compensation	919	539	606	$ 626
Foreign currency translation loss
NET LOSS
Ending balance, shares	167,037	162,067	149,831	149,818	167,037	149,831
Ending balance	$ 428,046	$ 415,259	$ 388,271	$ 387,686	$ 428,046	$ 388,271
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(295,494)	(294,078)	(281,821)	(273,422)	(294,078)	(273,422)
Shares issued through ATM
Shares issued for services
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees’ taxes
Shares issued upon exercise of stock options
Financing related fees
Stock-based compensation
Foreign currency translation loss
NET LOSS	(4,788)	(1,416)	(6,522)	(8,399)
Ending balance	(300,282)	(295,494)	(288,343)	(281,821)	(300,282)	(288,343)
Noncontrolling Interest/(Deficit) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1,104)	(1,072)	(1,741)	(1,712)	(1,072)	(1,712)
Shares issued through ATM
Shares issued for services
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees’ taxes
Shares issued upon exercise of stock options
Financing related fees
Stock-based compensation
Foreign currency translation loss
NET LOSS	(8)	(32)	(8)	(29)
Ending balance	(1,112)	(1,104)	(1,749)	(1,741)	(1,112)	(1,749)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(2,091)	(3,667)	634	(681)	(3,667)	(681)
Shares issued through ATM
Shares issued for services
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees’ taxes
Shares issued upon exercise of stock options
Financing related fees
Stock-based compensation
Foreign currency translation loss	(960)	1,576	(1,120)	1,315
NET LOSS
Ending balance	$ (3,051)	$ (2,091)	$ (486)	$ 634	$ (3,051)	$ (486)