Fair Value of Assets and Liabilities - Nonrecurring (Details) - Nonrecurring basis - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets measured at fair value
Assets measured at fair value on nonrecurring basis	$ 586	$ 404
Level 3
Assets measured at fair value
Assets measured at fair value on nonrecurring basis	586	404
Foreclosed real estate
Assets measured at fair value
Assets measured at fair value on nonrecurring basis	586	404
Foreclosed real estate | Level 3
Assets measured at fair value
Assets measured at fair value on nonrecurring basis	$ 586	$ 404