CONDENSED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (DEFICIENCY) (Unaudited) - USD ($) $ in Thousands		Ordinary Share		Additional Paid-in Capital	Accumulated deficit	Total
Balance at Dec. 31, 2018	[1]	$ 193		$ 154,670	$ (152,918)	$ 1,945
Balance, shares at Dec. 31, 2018	[1]	2,813,087
Share-based compensation to employees and non-employees				319		319
Issuance of ordinary shares upon exercise of options to purchase ordinary shares and RSUs by employees and non-employees			[2]
Issuance of ordinary shares upon exercise of options to purchase ordinary shares and RSUs by employees and non-employees, shares		2,206
Issuance of ordinary shares in "best efforts" offering, net of issuance expenses in the amount of $686	[3]	$ 52		3,632		3,684
Issuance of ordinary shares in "best efforts" offering, net of issuance expenses in the amount of $686, shares	[3]	760,000
Exercise of pre-funded warrants and warrants	[3]	$ 8		99		107
Exercise of pre-funded warrants and warrants, shares	[3]	119,881
Net loss					(4,000)	(4,000)
Balance at Mar. 31, 2019		$ 253		158,720	(156,918)	2,055
Balance, shares at Mar. 31, 2019		3,695,174
Balance at Dec. 31, 2019		$ 504		178,745	(168,469)	10,780
Balance, shares at Dec. 31, 2019		7,319,560
Share-based compensation to employees and non-employees				199		199
Issuance of ordinary shares upon vesting of RSUs by employees and non-employees			[2]
Issuance of ordinary shares upon vesting of RSUs by employees and non-employees, shares		10,595
Issuance of ordinary shares in "best efforts" offering, net of issuance expenses in the amount of $1,056	[3]	$ 290		3,720		4,010
Issuance of ordinary shares in "best efforts" offering, net of issuance expenses in the amount of $1,056, shares	[3]	4,053,172
Exercise of pre-funded warrants	[3]	$ 109		1,825		1,934
Exercise of pre-funded warrants, shares	[3]	1,546,828
Net loss					(3,840)	(3,840)
Balance at Mar. 31, 2020		$ 903		$ 184,489	$ (172,309)	$ 13,083
Balance, shares at Mar. 31, 2020		12,930,155

[1] Reflects our one-for-twenty-five reverse share split that became effective on April 1, 2019. See Note 7a to the condensed consolidated financial statements

[2] Represents an amount lower than $1.

[3] See Note 7f to the condensed consolidated financial statements