Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Deficit) (Details 1)

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Stockholders' Equity (Deficit) (Details 1)
shares in Thousands
Dec. 31, 2017
shares
Schedule of common stock reserved for future issuance  
Common Stock, Capital Shares Reserved for Future Issuance 4,840
Shares issuable upon the exercise of warrants [Member]  
Schedule of common stock reserved for future issuance  
Common Stock, Capital Shares Reserved for Future Issuance 2,112
Stock options outstanding [Member]  
Schedule of common stock reserved for future issuance  
Common Stock, Capital Shares Reserved for Future Issuance 2,728