OREO (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items]
Real Estate Acquired Through Foreclosure, Acquired Through Acquisition	$ 1,055	$ 0	$ 1,055	$ 0
Mortgage Loans in Process of Foreclosure, Amount	0		0
Real Estate Acquired Through Foreclosure [Roll Forward]
Beginning balance	9,428	9,257	10,019	6,254
Additions	1,395	792	1,763	4,019
Valuation adjustments	(9)	(586)	(56)	(603)
Dispositions	(583)	(1,555)	(1,495)	(1,762)
Ending balance	11,286	$ 7,908	11,286	$ 7,908
Residential real estate
Real Estate Acquired Through Foreclosure [Roll Forward]
Beginning balance			2,282
Ending balance	$ 2,686		$ 2,686