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Mortgage Servicing Rights (Tables)
 12 Months Ended
Dec. 31, 2023
Transfers and Servicing [Abstract]  
Summary of Changes in Mortgage Servicing Rights
The following table summarizes the changes in MSRs, which are included in other assets on the consolidated balance sheets, with adjustments to the carrying value included in mortgage banking income on the consolidated statements of income:
202320222021
 (dollars in thousands)
Amortized cost:
Balance at beginning of period$34,217 $35,993 $38,745 
Originations of MSRs2,475 4,067 9,216 
Amortization(5,090)(5,843)(11,968)
Balance at end of period$31,602 $34,217 $35,993 
Valuation allowance:
Balance at beginning of period$— $(600)$(10,500)
Reduction (addition) to valuation allowance— 600 9,900 
Balance at end of period$— $— $(600)
Net MSRs at end of period$31,602 $34,217 $35,393 
Estimated fair value of MSRs at end of period$49,696 $50,044 $35,393 
Schedule Of MSR Amortization Expense Estimated future MSR amortization expense, based on balances as of December 31, 2023, and the estimated remaining lives of the underlying loans, follows (dollars in thousands):
Year 
2024$3,822 
20253,425 
20263,061 
20272,741 
20282,455 
Thereafter16,098 
Total estimated amortization expense$31,602