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Derivative Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of carrying value of hedged asset and cumulative fair value hedging adjustment
    
   December 31, 2023 
(dollars in thousands)  Carrying
Amount
   Hedged Liability 
 Fixed Rate Liability1  $199,518   $482 
1These amounts included the amortized cost basis of closed portfolios of fixed rate loans used to designate hedging relationships in which the hedged item is the stated amount of the assets in the closed portfolio anticipated to be outstanding for the designated hedged period. As of December 31, 2023, the amortized cost basis of the closed portfolio used in this hedging relationship was $718.8 million, the cumulative basis adjustment associated with this hedging relationship was $511,000, and the amount of the designated hedged item was $200.0 million.
Schedule of outstanding financial derivative instruments
           
   December 31, 2023 
          Fair Value 
(dollars in thousands)   Notional   Balance Sheet
Location
   Asset/(Liability) 
Derivatives designated as hedging instruments:             
Fair value swap   $200,000   Other liabilities  $(482)
              
Derivatives not designated as hedging instruments:             
Mortgage loan interest rate lock commitments   12,973   Other assets   159 
MBS forward sales commitments   10,000   Other liabilities   (68)
Total derivative financial instruments  $222,973      $(391)
              
    December 31, 2022 
            Fair Value 
(dollars in thousands)   Notional   Balance Sheet
Location
   Asset/(Liability) 
Derivatives not designated as hedging instruments:             
Mortgage loan interest rate lock commitments  $6,793   Other assets  $49 
MBS forward sales commitments   5,750   Other assets   27 
Total derivative financial instruments  $12,543      $76 
Schedule of summarize the effect of fair value hedging relationship recognized in consolidated statement of income
    
(dollars in thousands)  Twelve months ended
December 31, 2023
 
Gain (loss) on fair value hedging relationship:     
Hedged liability   (482)
Fair value derivative designated as hedging instrument   511 
Total gain (loss) recognized in interest income on loans   29