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STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY DEFICIENCY (Unaudited) - USD ($)
$ in Thousands
Preferred C stocks [Member]
Common stocks [Member]
Additional paid-in capital [Member]
Accumulated deficit [Member]
Total
Balance at Beginning at Dec. 31, 2015 $ 2 $ 2 $ 19,521 $ (19,734) $ (209)
Balance at Beginning (in shares) at Dec. 31, 2015 1,951,261 2,611,328      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of Common stocks upon exercise of options   [1] 33 33
Issuance of Common stocks upon exercise of options (in shares)   12,382      
Issuance of Common stocks to consultant   [1]
Issuance of Common stocks to consultant (in shares)   9,000      
Stock-based compensation related to options granted to employees   459 459
ASU 2016-09 adoption, Note 2t   11 (11)
Stock-based compensation related to restricted stocks granted to consultant   49 49
Total comprehensive loss   (2,831) (2,831)
Balance at End at Dec. 31, 2016 $ 2 $ 2 20,073 (22,576) (2,499)
Balance at End (in shares) at Dec. 31, 2016 1,951,261 2,632,710      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation related to options granted to employees   536 536
Issuance of warrants to Common stock   637 637
Deemed dividend related to extension of February 2015 warrants to Common stock in January 2017   841 (841)
Total comprehensive loss   (1,725) (1,725)
Balance at End at Jun. 30, 2017 $ 2 $ 2 $ 22,087 $ (25,142) $ (3,051)
Balance at End (in shares) at Jun. 30, 2017 1,951,261 2,632,710      
[1] Represents an amount lower than $ 1.