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Derivative Instruments - Location and Amounts of Derivative Gains and Losses in Condensed Consolidated Statements of Income (Details) - Derivatives not designated as hedging instruments - Interest rate swaps - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Net unrealized gain (loss) on financial instruments      
Derivative Instruments, Gain (Loss) [Line Items]      
Net unrealized gain (loss) on financial instruments $ 39,986 $ (27,569) $ (35,363)
Financing interest expense      
Derivative Instruments, Gain (Loss) [Line Items]      
Net unrealized gain (loss) on financial instruments $ 25,650 $ 15,842 $ (5,411)