Other Real Estate Owned - Other Real Estate Owned Rollforward (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Other Real Estate [Roll Forward]
Balance, beginning	$ 106	$ 106	$ 106
Transfers from loans	819	2,799	2,799
Gain on foreclosure	192	397	397
Sales	(106)	0	(1,927)
Valuation adjustments	(569)	(1,269)	(1,269)
Balance, ending	$ 442	$ 2,033	$ 106