CONDENSED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands		Ordinary Shares	Additional Paid-in Capital	Treasury stock	Accumulated deficit	Total
Balance at Dec. 31, 2020		$ 1,827	$ 201,392	$ 0	$ (181,445)	$ 21,774
Balance, shares at Dec. 31, 2020		25,332,225
Share-based compensation to employees and non-employees			599	0	0	599
Issuance of ordinary shares upon vesting of employees and non-employees RSUs		$ 29	(29)	0	0	0
Issuance of ordinary shares upon vesting of employees and non-employees RSUs, Shares		366,796
Issuance of ordinary shares in a “registered direct" offering, net of issuance expenses in the amount of $3,228	[1]	$ 1,199	26,918	0	0	28,117
Issuance of ordinary shares in a “registered direct" offering, net of issuance expenses in the amount of $3,228 Shares	[1]	15,403,014
Exercise of pre-funded warrants and warrants	[1],[2]	$ 771	14,289	0	0	15,060
Exercise of pre-funded warrants and warrants, Shares	[1],[2]	10,425,258
Issuance of ordinary shares in a “best effort” offering, net of issuance expenses in the amount of $3,679	[1]	$ 832	35,489	0	0	36,321
Issuance of ordinary shares in a “best effort” offering, net of issuance expenses in the amount of $3,679, Shares	[1]	10,921,502
Net loss			0	0	(8,878)	(8,878)
Balance at Sep. 30, 2021		$ 4,658	278,658	0	(190,323)	92,993
Balance, shares at Sep. 30, 2021		62,448,795
Balance at Jun. 30, 2021		$ 3,394	250,332	0	(187,648)	66,078
Balance, shares at Jun. 30, 2021		46,201,052
Share-based compensation to employees and non-employees			231	0	0	231
Issuance of ordinary shares upon vesting of employees and non-employees RSUs		$ 18	(18)	0	0	0
Issuance of ordinary shares upon vesting of employees and non-employees RSUs, Shares		234,225
Issuance of ordinary shares in a “registered direct" offering, net of issuance expenses in the amount of $3,228	[1]	$ 1,199	26,918	0	0	28,117
Issuance of ordinary shares in a “registered direct" offering, net of issuance expenses in the amount of $3,228 Shares	[1]	15,403,014
Exercise of pre-funded warrants and warrants	[1],[2]	$ 47	1,195	0	0	1,242
Exercise of pre-funded warrants and warrants, Shares	[1],[2]	610,504
Net loss			0	0	(2,675)	(2,675)
Balance at Sep. 30, 2021		$ 4,658	278,658	0	(190,323)	92,993
Balance, shares at Sep. 30, 2021		62,448,795
Balance at Dec. 31, 2021		$ 4,661	278,903	0	(194,181)	89,383
Balance, shares at Dec. 31, 2021		62,480,163
Share-based compensation to employees and non-employees			646	0	0	646
Issuance of ordinary shares upon vesting of employees and non-employees RSUs		$ 30	(30)	0	0	0
Issuance of ordinary shares upon vesting of employees and non-employees RSUs, Shares		421,782
Treasury shares		$ (13)	0	(170)	0	(183)
Treasury Shares, Shares		(184,629)
Net loss			0	0	(14,256)	(14,256)
Balance at Sep. 30, 2022		$ 4,678	279,519	(170)	(208,437)	75,590
Balance, shares at Sep. 30, 2022		62,717,316
Balance at Jun. 30, 2022		$ 4,675	279,215	0	(202,977)	80,913
Balance, shares at Jun. 30, 2022		62,678,308
Share-based compensation to employees and non-employees			320	0	0	320
Issuance of ordinary shares upon vesting of employees and non-employees RSUs		$ 16	(16)	0	0	0
Issuance of ordinary shares upon vesting of employees and non-employees RSUs, Shares		223,637
Treasury shares		$ (13)	0	(170)	0	(183)
Treasury Shares, Shares		(184,629)
Net loss			0	0	(5,460)	(5,460)
Balance at Sep. 30, 2022		$ 4,678	$ 279,519	$ (170)	$ (208,437)	$ 75,590
Balance, shares at Sep. 30, 2022		62,717,316

[1] See Note 7e to the condensed consolidated financial statements

[2] See Note 7c to the condensed consolidated financial statements