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Summary of Significant Accounting Policies (Details)
12 Months Ended
Aug. 10, 2016
shares
Dec. 31, 2018
USD ($)
segment
shares
Jan. 01, 2019
USD ($)
Dec. 31, 2017
shares
Mar. 31, 2015
shares
Income Taxes          
Provision (benefit) for income taxes   $ 0      
Segment Information          
Number of operating segment | segment   1      
ASU 2016-02 | Adjustment | Minimum          
Recent Accounting Pronouncements          
Right of use asset     $ 100,000    
Lease liability     100,000    
ASU 2016-02 | Adjustment | Maximum          
Recent Accounting Pronouncements          
Right of use asset     200,000    
Lease liability     $ 200,000    
Series A          
Convertible Preferred Stock          
Convertible Preferred stock, share issued | shares         745,637
Shares converted | shares 827,205        
Convertible Preferred stock, share outstanding | shares   0   0