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Secondary Market Mortgage Activities (Tables)
 12 Months Ended
Dec. 31, 2020
Mortgage Banking [Abstract]  
Summary of Secondary Market Mortgage Activities
The following summarizes secondary market mortgage activities for the years ended December 31, 2020, December 31, 2019, and December 31, 2018: 
December 31, 2020December 31, 2019December 31, 2018
Loans originated for resale$87,528 $43,458 $22,990 
Proceeds from sales of loans held for sale82,619 43,198 23,311 
Net gains on sales of loans held for sale2,961 990 624 
Loan servicing fees726 634 600 
Summary of Activity for Capitalized Mortgage Servicing Rights
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, 2020December 31, 2019December 31, 2018
Balance, beginning of year$1,573 $1,495 $1,387 
Additions540 292 315 
Servicing rights acquired0 0 0 
Amortization(586)(214)(207)
Balance, end of year$1,527 $1,573 $1,495