Fair Value Measurement - Summary of Financial Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Level 1 [Member]
Assets [Abstract]
Mortgage loans held for sale		$ 0
Level 2 [Member]
Assets [Abstract]
Mortgage loans held for sale		247
Level 3 [Member]
Assets [Abstract]
Mortgage loans held for sale		0
Fair Value on a Nonrecurring Basis [Member]
Assets [Abstract]
Mortgage loans held for sale		247
Impaired loans, net	$ 1,220	1,570
Other real estate owned, net	1,356	1,356
Fair Value on a Nonrecurring Basis [Member] | Level 1 [Member]
Assets [Abstract]
Mortgage loans held for sale		0
Impaired loans, net	0	0
Other real estate owned, net	0	0
Fair Value on a Nonrecurring Basis [Member] | Level 2 [Member]
Assets [Abstract]
Mortgage loans held for sale		247
Impaired loans, net	0	0
Other real estate owned, net	0	0
Fair Value on a Nonrecurring Basis [Member] | Level 3 [Member]
Assets [Abstract]
Mortgage loans held for sale		0
Impaired loans, net	1,220	1,570
Other real estate owned, net	$ 1,356	$ 1,356