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Preferred Stock (Details) - $ / shares
1 Months Ended 6 Months Ended
Jun. 30, 2021
Apr. 30, 2021
Jun. 30, 2021
Class of Stock [Line Items]      
Liquidation preference (in dollars per share) $ 25   $ 25
Series B Preferred Stock      
Class of Stock [Line Items]      
Number of shares issued 1,350,000 1,350,000 1,350,000
Dividend/coupon rate   4.70%  
Par value (in dollars per share) $ 0.01 $ 0.01 $ 0.01
Liquidation preference (in dollars per share) $ 1,000 $ 1,000 $ 1,000
Series B Preferred Stock, On And After May 15, 2026 | US Treasury (UST) Interest Rate      
Class of Stock [Line Items]      
Dividend/coupon rate   3.868% 3.868%
Series C Preferred Stock      
Class of Stock [Line Items]      
Number of shares issued 1,000,000   1,000,000
Dividend/coupon rate 4.70%    
Par value (in dollars per share) $ 0.01   $ 0.01
Liquidation preference (in dollars per share) $ 1,000   $ 1,000
Series C Preferred Stock, On And After May 15, 2026 | US Treasury (UST) Interest Rate      
Class of Stock [Line Items]      
Dividend/coupon rate 3.481%   3.481%