Fair Value Measurements - Schedule of Fair Value Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Recurring
Balance of Assets Measured at Fair Value on Recurring or Nonrecurring Basis [Abstract]
Municipal bonds	$ 4,363	$ 3,370
Agency mortgage-backed securities	5,835	5,936
Mortgage servicing rights	3,113	3,239
Recurring | Level 1
Balance of Assets Measured at Fair Value on Recurring or Nonrecurring Basis [Abstract]
Municipal bonds	0	0
Agency mortgage-backed securities	0	0
Mortgage servicing rights	0	0
Recurring | Level 2
Balance of Assets Measured at Fair Value on Recurring or Nonrecurring Basis [Abstract]
Municipal bonds	4,363	3,370
Agency mortgage-backed securities	5,835	5,936
Mortgage servicing rights	0	0
Recurring | Level 3
Balance of Assets Measured at Fair Value on Recurring or Nonrecurring Basis [Abstract]
Municipal bonds	0	0
Agency mortgage-backed securities	0	0
Mortgage servicing rights	3,113	3,239
Nonrecurring
Balance of Assets Measured at Fair Value on Recurring or Nonrecurring Basis [Abstract]
OREO and repossessed assets	575	575
Impaired loans	9,079	12,393
Nonrecurring | Level 1
Balance of Assets Measured at Fair Value on Recurring or Nonrecurring Basis [Abstract]
OREO and repossessed assets	0	0
Impaired loans	0	0
Nonrecurring | Level 2
Balance of Assets Measured at Fair Value on Recurring or Nonrecurring Basis [Abstract]
OREO and repossessed assets	0	0
Impaired loans	0	0
Nonrecurring | Level 3
Balance of Assets Measured at Fair Value on Recurring or Nonrecurring Basis [Abstract]
OREO and repossessed assets	575	575
Impaired loans	$ 9,079	$ 12,393