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Secondary Market Mortgage Activities | 12 Months Ended
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Dec. 31, 2016
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Secondary Market Mortgage Activities | 6. Secondary Market Mortgage Activities The following summarizes secondary market mortgage activities for the years ended December 31, 2016, 2015, and 2014:
|  | 2016 |  |  | 2015 |  |  | 2014 |
Loans originated for resale, net of principal pay downs |  | $ | 31,255 |  |  | $ | 15,171 |  |  | $ | 10,271 |
Proceeds from sales of loans held for sale |  |  | 33,045 |  |  |  | 14,927 |  |  |  | 10,227 |
Net gains on sales of loans held for sale |  |  | 818 |  |  |  | 630 |  |  |  | 596 |
Loan servicing fees |  |  | 421 |  |  |  | 390 |  |  |  | 473 |
Total loans serviced for others were $121,938, $107,165, and $112,002 at December 31, 2016, 2015, and 2014, respectively. The following summarizes activity for capitalized mortgage servicing rights for the years ended December 31, 2016, 2015, and 2014:
|  | 2016 |  |  | 2015 |  |  | 2014 |
Balance, beginning of year |  | $ | 962 |  |  | $ | 856 |  |  | $ | 904 |
Additions |  |  | 200 |  |  |  | 380 |  |  |  | 240 |
Servicing rights acquired |  |  | 367 |  |  |  | 0 |  |  |  | 0 |
Amortization |  |  | (138 | ) |  |  | (274 | ) |  |  | (288 | )
Balance, end of year |  | $ | 1,391 |  |  | $ | 962 |  |  | $ | 856 |
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 $1,391, $964, and $896 at December 31, 2016, 2015, and 2014, respectively. No valuation allowance is deemed necessary at December 31, 2016, 2015, or 2014. The fair value of interest rate lock commitments and forward commitments to sell loans was not material at December 31, 2016 or 2015.

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- Definition Secondary market mortgage activities. + References No definition available. + Details
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