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Debt Financing - Schedule of Total Debt Financing (Parenthetical) (Details)
Sep. 30, 2021
USD ($)
Swap
Dec. 31, 2020
USD ($)
Swap
Debt Instrument [Line Items]    
Effective net interest rate 4.36%  
Debt financing $ 760,632,414 $ 673,957,640
Secured Line Of Credit Facility [Member]    
Debt Instrument [Line Items]    
Number of return swap transactions | Swap 2  
Fixed - M45 [Member] | Interest Rate Through July 31, 2023 [Member]    
Debt Instrument [Line Items]    
Interest rate 3.82% 3.82%
Fixed - M45 [Member] | Interest Rate from August 1, 2023 [Member]    
Debt Instrument [Line Items]    
Interest rate 4.39% 4.39%
Total Return Swaps [Member] | Secured Line Of Credit Facility [Member]    
Debt Instrument [Line Items]    
Number of return swap transactions | Swap 2 2
Total Return Swap One [Member] | Secured Line Of Credit Facility [Member]    
Debt Instrument [Line Items]    
Effective net interest rate 4.25% 4.25%
Debt financing $ 39,700,000 $ 40,000,000.0
Total Return Swap Two [Member] | Secured Line Of Credit Facility [Member]    
Debt Instrument [Line Items]    
Effective net interest rate 1.00% 1.00%
Debt financing $ 63,500,000 $ 63,500,000