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Derivative Instruments and Hedging (Details) - Not Designated as Hedging Instrument - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Interest rate derivatives - caps      
Derivative Instruments, Gain (Loss) [Line Items]      
Notional amount (in thousands) $ 3,525,751   $ 3,597,301
Aggregate principal balance on corresponding mortgage loans (in thousands) $ 3,504,500   $ 3,438,714
Interest rate derivatives - caps | Minimum      
Derivative Instruments, Gain (Loss) [Line Items]      
Strike rate 2.00%   2.00%
Interest rate derivatives - caps | Maximum      
Derivative Instruments, Gain (Loss) [Line Items]      
Strike rate 4.00%   4.00%
Interest rate derivatives - caps      
Derivative Instruments, Gain (Loss) [Line Items]      
Notional amount (in thousands) $ 2,873,651 $ 3,206,301  
Total cost (in thousands) $ 5,255 $ 534  
Interest rate derivatives - caps | Minimum      
Derivative Instruments, Gain (Loss) [Line Items]      
Strike rate 3.00% 3.00%  
Interest rate derivatives - caps | Maximum      
Derivative Instruments, Gain (Loss) [Line Items]      
Strike rate 4.00% 4.00%