Quarterly report pursuant to Section 13 or 15(d)

Warrants - Additional Information (Details)

v3.20.1
Warrants - Additional Information (Details) - $ / shares
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Class of Warrant or Right [Line Items]    
Class of Warrant or Right, Outstanding 2,714,858 3,331,506
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 1.70  
Convertible Preferred Stock Maximum Beneficial Ownership Percentage 9.99%  
Warrant [Member]    
Class of Warrant or Right [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Expirations 616,648