OREO (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items]
Real Estate Acquired Through Foreclosure, Acquired Through Acquisition	$ 1,120	$ 0	$ 1,120	$ 0
Mortgage Loans in Process of Foreclosure, Amount	0		0
Real Estate Acquired Through Foreclosure [Roll Forward]
Beginning balance	7,908	11,773	6,254	13,554
Additions	1,316	984	5,335	5,380
Valuation adjustments	0	(73)	(603)	(179)
Dispositions	(897)	(4,653)	(2,659)	(10,724)
Ending balance	9,447	$ 8,031	9,447	$ 8,031
Residential real estate
Real Estate Acquired Through Foreclosure [Roll Forward]
Beginning balance			1,686
Ending balance	$ 2,730		$ 2,730