Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Direct financing	ATM	Common Stock [Member]	Common Stock [Member] Direct financing	Common Stock [Member] ATM	Retained Earnings [Member]	Noncontrolling Interest [Member]	AOCI Attributable to Parent [Member]
Balance at Dec. 31, 2022	$ 71,936			$ 440,280			$ (363,370)	$ (1,403)	$ (3,571)
Balance, shares at Dec. 31, 2022				170,093
Shares issued ,Value			$ 5,841			$ 5,841
Shares issued , shares						4,237
Financing related fees	(193)			$ (193)
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees' taxes	(37)			$ (37)
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees' taxes, shares				53
Shares issued upon exercise of stock options	47			$ 47
Shares issued upon exercise of stock options, shares				56
Stock-based compensation	2,311			$ 2,311
Unrealized gain(loss) on marketable debt securities	141								141
Foreign currency translation adjustment	819								819
NET LOSS	(9,607)						(9,601)	(6)
Balance at Jun. 30, 2023	71,258			$ 448,249			(372,971)	(1,409)	(2,611)
Balance, shares at Jun. 30, 2023				174,439
Balance at Mar. 31, 2023	69,015			$ 441,299			(367,742)	(1,435)	(3,107)
Balance, shares at Mar. 31, 2023				170,174
Shares issued ,Value			5,841			$ 5,841
Shares issued , shares						4,237
Financing related fees	(193)			$ (193)
Shares issued upon exercise of stock options	22			$ 22
Shares issued upon exercise of stock options, shares				28
Stock-based compensation	1,280			$ 1,280
Unrealized gain(loss) on marketable debt securities	50								50
Foreign currency translation adjustment	446								446
NET LOSS	(5,203)						(5,229)	26
Balance at Jun. 30, 2023	71,258			$ 448,249			(372,971)	(1,409)	(2,611)
Balance, shares at Jun. 30, 2023				174,439
Balance at Dec. 31, 2023	62,023			$ 451,343			(384,856)	(1,396)	(3,068)
Balance, shares at Dec. 31, 2023				174,987
Shares issued ,Value		$ 14,000	70		$ 14,000	$ 70
Shares issued , shares					13,462	56
Financing related fees	(113)			$ (113)
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees' taxes	(23)			$ (23)
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees' taxes, shares				45
Shares issued upon exercise of stock options	219			$ 219
Shares issued upon exercise of stock options, shares				274
Stock-based compensation	2,432			$ 2,432
Unrealized gain(loss) on marketable debt securities	(7)								(7)
Foreign currency translation adjustment	605								605
NET LOSS	(12,331)						(12,302)	(29)
Balance at Jun. 30, 2024	66,875			$ 467,928			(397,158)	(1,425)	(2,470)
Balance, shares at Jun. 30, 2024				188,824
Balance at Mar. 31, 2024	70,990			$ 466,571			(391,398)	(1,412)	(2,771)
Balance, shares at Mar. 31, 2024				188,754
Shares issued ,Value			$ 33			$ 33
Shares issued , shares						26
Financing related fees	(1)			$ (1)
Shares issued upon exercise of stock options	56			$ 56
Shares issued upon exercise of stock options, shares				44
Stock-based compensation	1,269			$ 1,269
Unrealized gain(loss) on marketable debt securities	(6)								(6)
Foreign currency translation adjustment	307								307
NET LOSS	(5,773)						(5,760)	(13)
Balance at Jun. 30, 2024	$ 66,875			$ 467,928			$ (397,158)	$ (1,425)	$ (2,470)
Balance, shares at Jun. 30, 2024				188,824