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Goodwill and Other Intangible Assets
 6 Months Ended
Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets
The Corporation has goodwill from acquisitions which is deemed to be an indefinite intangible asset and is not amortized. The Corporation also has core deposit and customer-related intangibles and servicing rights, which are not deemed to have an indefinite life and therefore will continue to be amortized over their useful life using the present value of projected cash flows.

Changes in the carrying amount of the Corporation's goodwill by business segment for the six months ended June 30, 2021 were as follows:
(Dollars in thousands)BankingWealth ManagementInsuranceConsolidated
Balance at December 31, 2020$138,476 $15,434 $18,649 $172,559 
Addition to goodwill from acquisitions— — — — 
Balance at June 30, 2021$138,476 $15,434 $18,649 $172,559 

The following table reflects the components of intangible assets at the dates indicated:

At June 30, 2021At December 31, 2020
(Dollars in thousands)Gross Carrying Amount
Accumulated Amortization (1)
Net Carrying AmountGross Carrying Amount
Accumulated Amortization (1)
Net Carrying Amount
Amortized intangible assets:
Core deposit intangibles$6,788 $5,129 $1,659 $6,788 $4,787 $2,001 
Customer related intangibles6,017 5,713 304 7,604 7,147 457 
Servicing rights24,807 17,374 7,433 22,354 15,946 6,408 
Total amortized intangible assets$37,612 $28,216 $9,396 $36,746 $27,880 $8,866 
(1) Included within accumulated amortization is a valuation allowance of $1 thousand and $87 thousand on mortgage servicing rights at June 30, 2021 and December 31, 2020, respectively.

The estimated aggregate amortization expense for core deposit and customer-related intangibles for the remainder of 2021 and the succeeding fiscal years is as follows:
Year(Dollars in thousands)Amount
Remainder of 2021$428 
2022666 
2023409 
2024267 
2025145 
Thereafter48 
Total$1,963 
The aggregate fair value of mortgage servicing rights was $9.7 million and $6.7 million at June 30, 2021 and December 31, 2020, respectively. The fair value of mortgage servicing rights was determined using a discount rate of 10.0% at June 30, 2021 and December 31, 2020.
Changes in the servicing rights balance are summarized as follows:
 Three Months Ended June 30,Six Months Ended June 30,
(Dollars in thousands)2021202020212020
Beginning of period$7,015 $6,440 $6,408 $6,626 
Servicing rights capitalized1,140 835 2,453 1,361 
Amortization of servicing rights(722)(911)(1,514)(1,568)
Changes in valuation allowance— (283)86 (338)
End of period$7,433 $6,081 $7,433 $6,081 
Loans serviced for others$1,303,105 $1,113,819 $1,303,105 $1,113,819 
Activity in the valuation allowance for mortgage servicing rights was as follows:
 Three Months Ended June 30,Six Months Ended June 30,
(Dollars in thousands)2021202020212020
Valuation allowance, beginning of period$(1)$(55)$(87)$— 
Additions— (283)— (338)
Reductions— — 86 — 
Valuation allowance, end of period$(1)$(338)$(1)$(338)

The estimated amortization expense of servicing rights for the remainder of 2021 and the succeeding fiscal years is as follows:
Year(Dollars in thousands)Amount
Remainder of 2021$1,426 
20221,167 
2023951 
2024774 
2025627 
Thereafter2,488 
Total$7,433