Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Schedule of Antidilutive Securities (Details)

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Summary of Significant Accounting Policies - Schedule of Antidilutive Securities (Details) - shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive earnings per share, amount 45,921,000 33,556,000
Stock Options [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive earnings per share, amount 13,457,000 11,396,000
Preferred Stock Issuable Upon Conversion [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive earnings per share, amount 26,665,000 16,202,000
Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive earnings per share, amount 5,799,000 5,958,000