Other Real Estate Owned ("OREO") (Foreclosed Real Estate Roll Forward) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Repossessed Assets Rollforward [Roll Forward]
Balance at beginning of year		$ 8,111	$ 9,341	$ 9,341
Additions of underlying property	$ 3,300	3,266	282	307
Disposals of underlying property		(416)	(991)	(1,005)
Valuation allowance		(766)	(425)	(532)
Balance at end of period	$ 10,195	$ 10,195	$ 8,207	$ 8,111