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Secondary Market Mortgage Activities (Tables)
 12 Months Ended
Dec. 31, 2018
Mortgage Banking [Abstract]  
Summary of Secondary Market Mortgage Activities
The following summarizes secondary market mortgage activities for the years ended December 31, 2018, 2017, and 2016: 
 
2018
 
2017
 
2016
Loans originated for resale
$
22,990

 
$
25,231

 
$
31,255

Proceeds from sales of loans held for sale
23,311

 
24,285

 
33,045

Net gains on sales of loans held for sale
624

 
545

 
818

Loan servicing fees
600

 
563

 
421
Summary of Activity for Capitalized Mortgage Servicing Rights
The following summarizes activity for capitalized mortgage servicing rights for the years ended December 31, 2018, 2017, and 2016: 
 
2018
 
2017
 
2016
Balance, beginning of year
$
1,387

 
$
1,391

 
$
962

Additions
315

 
198

 
200

Servicing rights acquired
0

 
0

 
367

Amortization
(207
)
 
(202
)
 
(138
)
Balance, end of year
$
1,495

 
$
1,387

 
$
1,391