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Agreements with Diversus - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Mar. 27, 2019
Related Party Transaction [Line Items]            
Earned management fee, percentage     12.00%      
Quarterly performance fees payable $ 0   $ 0      
Prepaid management fee 8,214,286   $ 8,214,286   $ 8,928,571 $ 10,000,000
Prepaid management fee amortization period     7 years      
Line of credit facility, maximum borrowing capacity           $ 6,000,000
Line of credit 0   $ 0      
Other Underwriting Expenses [Member]            
Related Party Transaction [Line Items]            
Prepaid management amortization expense $ 357,143 $ 357,143 $ 714,285 $ 357,143