Interim Condensed Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock		Additional Paid-in Capital	Accumulated Deficit	Total
Balance at Jun. 30, 2018		[1]	$ 244,204	$ (215,697)	$ 28,507
Balance, shares at Jun. 30, 2018	11,356,579
Stock-based compensation to employees, directors and non-employee consultants		[1]	2,196		2,196
Stock-based compensation to employees, directors and non-employee consultants, shares	151,916
Issuance of common stock under At Market Issuance Sales Agreement, net of issuance costs of $148 (see Note 6a)		[1]	1,952		1,952
Issuance of common stock under At Market Issuance Sales Agreement, net of issuance costs of $148 (see Note 6a), shares	170,600
Exercise of options by employees and non-employee consultants			8		8
Exercise of options by employees and non-employee consultants, shares	1,850
Net loss				(17,469)	(17,469)
Balance at Dec. 31, 2018		[1]	248,360	(233,166)	15,194
Balance, shares at Dec. 31, 2018	11,680,945
Balance at Sep. 30, 2018		[1]	246,012	(224,483)	21,529
Balance, shares at Sep. 30, 2018	11,464,971
Stock-based compensation to employees, directors and non-employee consultants		[1]	869		869
Stock-based compensation to employees, directors and non-employee consultants, shares	82,374
Issuance of common stock under At Market Issuance Sales Agreement, net of issuance costs of $121 (see Note 6a)		[1]	1,479		1,479
Issuance of common stock under At Market Issuance Sales Agreement, net of issuance costs of $121 (see Note 6a), shares	133,000
Exercise of options by employees and non-employee consultants
Exercise of options by employees and non-employee consultants, shares	600
Net loss				(8,683)	(8,683)
Balance at Dec. 31, 2018		[1]	248,360	(233,166)	15,194
Balance, shares at Dec. 31, 2018	11,680,945
Balance at Jun. 30, 2019		[1]	272,825	(251,004)	21,821
Balance, shares at Jun. 30, 2019	15,082,852
Stock-based compensation to employees, directors and non-employee consultants		[1]	1,631		1,631
Stock-based compensation to employees, directors and non-employee consultants, shares	201,155
Issuance of common stock under Open Market Sales Agreement, net of issuance costs of $812 (see Note 6b)		[1]	5,967		5,967
Issuance of common stock under Open Market Sales Agreement, net of issuance costs of $812 (see Note 6b), shares	1,644,118
Exercise of options by employees and non-employee consultants
Exercise of options by employees and non-employee consultants, shares	5,000
Round up of shares due to reverse stock split effectuated on July 25, 2019 (see Note 1c)		[1]
Round up of shares due to reverse stock split effectuated on July 25, 2019 (see Note 1c), shares	1,292
Net loss				(13,509)	(13,509)
Balance at Dec. 31, 2019		[1]	280,423	(264,513)	15,910
Balance, shares at Dec. 31, 2019	16,934,417
Balance at Sep. 30, 2019		[1]	275,670	(258,143)	17,527
Balance, shares at Sep. 30, 2019	15,619,913
Stock-based compensation to employees, directors and non-employee consultants		[1]	767		767
Stock-based compensation to employees, directors and non-employee consultants, shares	108,286
Issuance of common stock under Open Market Sales Agreement, net of issuance costs of $614 (see Note 6b)		[1]	3,986		3,986
Issuance of common stock under Open Market Sales Agreement, net of issuance costs of $614 (see Note 6b), shares	1,204,218
Exercise of options by employees and non-employee consultants
Exercise of options by employees and non-employee consultants, shares	2,000
Net loss				(6,370)	(6,370)
Balance at Dec. 31, 2019		[1]	$ 280,423	$ (264,513)	$ 15,910
Balance, shares at Dec. 31, 2019	16,934,417

[1] Less than $1