Other Real Estate Owned (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Real Estate Owned
Balance, beginning of year	$ 326	$ 460	$ 1,161
Acquisitions	524	326	197
Foreclosures	15	0	0
Sales	(1,055)	(507)	(577)
Gain (loss) on sale	346	47	18
Write downs	(9)	0	(339)
Balance, end of year	147	326	$ 460
Consumer mortgage loans collateralized by residential real estate, foreclosure proceedings in process	$ 0	$ 73