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Earnings Per Share and Equity Transactions - Narrative (Details) - $ / shares
3 Months Ended
Dec. 21, 2020
May 01, 2019
Mar. 31, 2020
Class of Stock [Line Items]      
Stock repurchase program, discount percentage   25.00%  
Distribution reinvestment plan, discount percent   25.00%  
Common Stock      
Class of Stock [Line Items]      
Stock repurchase program, discount percentage 25.00%    
Purchase price (usd per share) $ 2.17 $ 3.14  
Repurchase of common stock (in shares)     0
Issuance of common stock under dividend reinvestment plan (in shares)     21,249
Net asset value (in dollars per share) $ 2.89