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Derivatives and Hedging Activities (Tables)
12 Months Ended
Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Summary of Pre-Tax Gains or Losses
Years ended
(Dollars in thousands)December 31,
2020
December 31,
2019
December 31,
2018
Amount of (loss) gain recognized in OCI$(472)(7,047)3,286 
Amount of loss reclassified from OCI to interest expense— (10,816)(2,334)