Real Estate Owned and Repossessed Assets - Activity in Real Estate Owned an Repossessed Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Real Estate Owned and Repossessed Assets [Roll Forward]
Beginning balance	$ 124	$ 23
Loans transferred to foreclosed assets	412	276
Sales	(376)	(146)
Market value adjustments	(10)	(3)
Net gain (loss) on sales	4	(26)
Ending balance	$ 154	$ 124