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Derivative Financial Instruments - FV of Interest Rate Swaps (Details) - Interest Rate Swaps - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Fair value of the interest rate swaps outstanding    
Notional amount assets $ 300,000 $ 0
Fair value - assets 1,704 0
Notional amount liabilities 975,000 1,125,000
Fair Value - liabilities $ (28,795) $ (40,656)