STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIENCY) - USD ($) $ in Thousands	Total		Common Stock [Member]		Preferred Stock [Member]		Additional Paid-in Capital [Member]		Accumulated deficit [Member]
Balance at Dec. 31, 2015	$ (1,580)		$ 5		$ 0		$ 41,769		$ (43,354)
Balance (in shares) at Dec. 31, 2015			2,911,788		0
Issuance of Common Stock in March 2016 Public Offering, net of issuance cost	1,572		$ 1		$ 0		1,571		0
Issuance of Common Stock in March 2016 Public Offering, net of issuance cost (in shares)			1,333,333		0
Issuance of Common Stock in March 2016 Private Placement, net of issuance cost	828		$ 0	[1]			828
Issuance of Common Stock in March 2016 Private Placement, net of issuance cost (in shares)			599,999		0
Issuance of Common Stock in January 2016 to service provider	37		$ 0	[1]	$ 0		37		0
Issuance of Common Stock in January 2016 to service provider (in shares)			5,556		0
Payment for executives, employee and directors under Salary Program	310		$ 0	[1]	$ 0		310		0
Payment for executives, employee and directors under Salary Program (in shares)			57,910		0
Issuance of Common Stock in March 2016 to officer	86		$ 0	[1]	$ 0		86		0
Issuance of Common Stock in March 2016 to officer (in shares)			20,000		0
Exercise of warrants into Common Stock, net of issuance cost	210		$ 0	[1]	$ 0		210		0
Exercise of warrants into Common Stock, net of issuance cost (in shares)			77,019		0
Exercise of options	0	[1]	$ 0	[1]	$ 0		0	[1]	0
Exercise of options (In Shares)			84,106		0
Deemed dividend related to Series A Preferred Stock exchange agreement into Common Stock in March 2016	0		$ 0		$ 0		455		(455)
Deemed dividend related to Series A Preferred Stock exchange agreement into Common Stock in March 2016 (in shares)			124,737		0
Deemed dividend related to extension of July 2015 Series A warrants in July 2016	0		$ 0		$ 0		265		(265)
Conversion of Series A Preferred Stock into Common Stock	2,277		$ 0	[1]	$ 0		2,277		0
Conversion of Series A Preferred Stock into Common Stock (in shares)			498,935		0
Stock-based compensation	605		$ 0		$ 0		605		0
Net loss	(10,887)		0		0		0		(10,887)
Balance at Dec. 31, 2016	(6,541)		$ 6		$ 0		48,413		(54,960)
Balance (in shares) at Dec. 31, 2016			5,713,383		0
Issuance of Common Stock in January 2017 Private Placement, net of issuance cost	2,936		$ 0	[1]	$ 0		2,936		0
Issuance of Common Stock in January 2017 Private Placement, net of issuance cost (In Shares)			1,113,922		0
Payment for executives, employee and directors under Salary Program	$ 707		$ 0	[1]	$ 0		707		0
Payment for executives, employee and directors under Salary Program (in shares)	110,987		271,880		0
Issuance of Common Stock to Employees	$ 1,514		$ 0	[1]	$ 0		1,514		0
Issuance of Common Stock to Employees (In Shares)			474,880		0
Issuance of Common Stock to consultants and service provider	874		$ 0	[1]	$ 0		874		0
Issuance of Common Stock to consultants and service provider (in shares)			281,681		0
Issuance of Common Stock in March 2017 Private Placement, net of issuance cost	1,878		$ 0	[1]	$ 0		1,878		0
Issuance of Common Stock in March 2017 Private Placement, net of issuance cost (In Shares)			707,515		0
Reclassification of warrants from liability to equity on March 8, 2017	8,655		$ 0		$ 0		8,655		0
Issuance of Common Stock in April 2017 Public offering, net of issuance cost	3,855		$ 1		$ 0		3,854		0
Issuance of Common Stock in April 2017 Public offering, net of issuance cost (In Shares)			1,450,000		0
Exercise of options	$ 0	[1]	$ 0	[1]	$ 0		0	[1]	0
Exercise of options (In Shares)	91,855		91,855		0
Issuance of Common Stock in August 2017 Private Placement, net of issuance cost	$ 801		$ 0	[1]	$ 0		801		0
Issuance of Common Stock in August 2017 Private Placement, net of issuance cost (In Shares)			483,333		0
Issuance of Preferred Stock in August 2017 Private placement, net of issuance cost	3,711		$ 0		$ 0	[1]	3,711		0
Issuance of Preferred Stock in August 2017 Private placement, net of issuance cost (In Shares)			0		2,307,654
Conversion of Series A Preferred Stock into Common Stock	0
Issuance of Common stock in November 2017 warrant exchange agreement		[1]		[1]	$ 0
Issuance of Common stock in November 2017 warrant exchange agreement (in shares)			1,039,676
Conversion of Preferred Stock to Common Stock	0		$ 0	[1]	$ 0	[1]	0		0
Conversion of Preferred Stock to Common Stock (In Shares)			2,307,654		(2,307,654)
Deemed dividend related to Stock dividend	0		$ 0	[1]	$ 0		255		(255)
Deemed dividend related to Stock dividend (In Shares)			138,459		0
Stock-based compensation	1,294		$ 0		$ 0		1,294		0
Net loss	(15,743)		0		0		0		(15,743)
Balance at Dec. 31, 2017	$ 3,941		$ 7		$ 0	[1]	$ 74,892		$ (70,958)
Balance (in shares) at Dec. 31, 2017			14,074,238		0

[1] Represents an amount lower than $1.