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Related Party Transaction (Details) - USD ($)
9 Months Ended
Aug. 20, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Aug. 19, 2019
Related Party Transaction [Line Items]          
Share price (usd per share)         $ 17.99
Proceeds from issuance of common stock $ 1,000,000.0 $ 296,000 $ 1,363,000    
Chief Operating Officer          
Related Party Transaction [Line Items]          
Issuance of common stock (shares) 55,586        
Director | Note holder | Chief Operating Officer          
Related Party Transaction [Line Items]          
Aggregate principal amount   $ 42,000,000.0   $ 42,000,000.0