Other Real Estate Owned - Other Real Estate Owned Rollforward (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Other Real Estate [Roll Forward]
Balance, beginning	$ 571	$ 2,102	$ 2,102
Net loans transferred to OREO	701	736	867
Sales	(409)	(937)	(2,110)
Valuation adjustments	0	(53)	(288)
Balance, ending	$ 863	$ 1,848	$ 571