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Related Party Disclosures (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2011
Dec. 31, 2020
Related Party Transaction [Line Items]        
Due from Related Parties $ 0     $ 0
Due to Related Parties 0     $ 0
Affiliated Entity | Management And Consulting Services        
Related Party Transaction [Line Items]        
Management fee per year     $ 1,000,000.0  
Management fees $ 300,000 $ 300,000