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Subsequent Events (Details) - USD ($)
6 Months Ended
Jul. 27, 2020
Jun. 30, 2020
Jun. 30, 2019
Aug. 13, 2020
Dec. 31, 2019
Subsequent Event [Line Items]          
Cash received from income tax refund   $ 0 $ 506,866    
Common stock, par value (USD per share)   $ 0.001     $ 0.001
Subsequent Event | Open Market Sale Agreement          
Subsequent Event [Line Items]          
Common stock, par value (USD per share)       $ 0.001  
Sale of stock, authorized offering amount       $ 50,000,000.0  
Subsequent Event | Tax Year 2019          
Subsequent Event [Line Items]          
Cash received from income tax refund $ 500,000