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Derivatives and Hedging Activities - Cash Flow Hedge on Comprehensive Income (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Amount of Gain Recognized In AOCI    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Interest rate swap, net of income taxes $ (1,546) $ 11,416