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Derivative and Hedging Activities - Effect of Cash Flow Derivative Instruments on AOCL (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Amount of gain (loss) recognized in AOCL $ 4,532 $ (49,285) $ (58,484) $ 1,340
Amount of gain (loss) reclassified from AOCL to interest expense $ 5,891 $ (645) $ 11,768 $ (154)