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Secondary Market Mortgage Activities | 12 Months Ended
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Dec. 31, 2020
Mortgage Banking [Abstract] |
Secondary Market Mortgage Activities | Secondary Market Mortgage ActivitiesTotal loans serviced for others were $224,296 and $188,648 December 31, 2020 and December 31, 2019, respectively. The following summarizes secondary market mortgage activities for the years ended December 31, 2020, December 31, 2019, and December 31, 2018:
| December 31, 2020 |  | December 31, 2019 |  | December 31, 2018
Loans originated for resale | $ | 87,528 |  |  | $ | 43,458 |  |  | $ | 22,990 |
Proceeds from sales of loans held for sale | 82,619 |  |  | 43,198 |  |  | 23,311 |
Net gains on sales of loans held for sale | 2,961 |  |  | 990 |  |  | 624 |
Loan servicing fees | 726 |  |  | 634 |  |  | 600 |
The following summarizes activity for capitalized mortgage servicing rights for the years ended December 31, 2020, December 31, 2019, and December 31, 2018:
| December 31, 2020 |  | December 31, 2019 |  | December 31, 2018
Balance, beginning of year | $ | 1,573 |  |  | $ | 1,495 |  |  | $ | 1,387 |
Additions | 540 |  |  | 292 |  |  | 315 |
Servicing rights acquired | 0 |  |  | 0 |  |  | 0 |
Amortization | (586) |  |  | (214) |  |  | (207) |
Balance, end of year | $ | 1,527 |  |  | $ | 1,573 |  |  | $ | 1,495 |
The fair value of mortgage servicing rights is based on market prices for comparable mortgage servicing contracts, when available, or alternatively based on a valuation model that calculates the present value of estimated future net servicing income. The fair value of mortgage servicing rights was not materially different than amortized cost at December 31, 2020 and December 31, 2019, respectively. No valuation allowance was deemed necessary at December 31, 2020, December 31, 2019, and December 31, 2018. The fair value of interest rate lock commitments and forward commitments to sell loans was not material at December 31, 2020 or December 31, 2019.

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