Stockholders' Equity (Deficit) (Details 1) shares in Thousands	Dec. 31, 2018 shares
Schedule of common stock reserved for future issuance
Common Stock, Capital Shares Reserved for Future Issuance	6,628
Shares issuable upon the exercise of warrants [Member]
Schedule of common stock reserved for future issuance
Common Stock, Capital Shares Reserved for Future Issuance	5,963
Stock options outstanding [Member]
Schedule of common stock reserved for future issuance
Common Stock, Capital Shares Reserved for Future Issuance	665