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Loan Servicing Rights (Tables)
9 Months Ended
Sep. 30, 2021
Transfers and Servicing [Abstract]  
Components of Loan Servicing Rights and Valuation Allowance
The following table summarizes the carrying values and activity related to loan servicing rights and the related valuation allowance: 
Three Months Ended
September 30,
Nine Months Ended
September 30,
(dollars in thousands)2021202020212020
Balance at beginning of period$28,886 $26,288 $28,124 $25,399 
Additions2,671 4,446 8,842 9,849 
Amortization(2,236)(2,885)(7,645)(7,399)
Balance before valuation allowance at end of period29,321 27,849 29,321 27,849 
Valuation allowance:
Balance at beginning of period(105)(2,253)(1,407)(31)
(Additions)/recoveries5 (95)1,307 (2,317)
Balance at end of period(100)(2,348)(100)(2,348)
Loan servicing rights, net$29,221 $25,501 $29,221 $25,501