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Derivatives and Hedging Activities (Tables)
9 Months Ended
Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Summary of pre-tax gains or losses
The effect of cash flow hedge accounting on OCI for the periods ending September 30, 2021 and 2020 was as follows:
Three Months endedNine Months ended
(Dollars in thousands)September 30,
2021
September 30,
2020
September 30,
2021
September 30,
2020
Amount of gain (loss) recognized in OCI
$30 (76)479 (532)