Mortgage Servicing Assets (Tables)

12 Months Ended

Dec. 31, 2019

Mortgage Servicing Assets.

Schedule of changes in mortgage servicing assets

(Dollars in thousands)	2019		2018
Balance at beginning of year	$	226	$	263
Additions		344		—
Impairments		(16)		—
Amortization		(51)		(37)
Balance at end of year	$	503	$	226

Schedule of gross carrying values, accumulated amortization, and net carrying values of mortgage servicing assets

	December 31,
(Dollars in thousands)	2019		2018
Gross carrying value	$	1,638	$	1,310
Accumulated amortization		(1,135)		(1,084)
Net carrying value	$	503	$	226

Schedule of estimated future amortization expense for mortgage servicing assets

(Dollars in thousands)
2020	$	92
2021		73
2022		57
2023		46
2024		38
Thereafter		197
Total	$	503

Schedule of fair values and key assumptions used in determining fair values of mortgage servicing assets

	2019			2018
Fair value, beginning of year (in thousands)	$	291		$	311
Fair value, end of year (in thousands)		552			291
Weighted average discount rate		10.25	%		10.50	%
Weighted average prepayment speed assumption (CPR)		12.58			8.86
Annual cost to service (per loan)	$	75		$	70