Other Real Estate Owned (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Activity for other real estate owned [Roll Forward]
Beginning balance of other real estate owned	$ 35,812	$ 38,985	$ 35,856	$ 40,674
New assets acquired	577	1,960	1,581	3,251
Capitalized costs	0	0	0	0
Fair value adjustments	(1,449)	(91)	(1,987)	(224)
Sale of assets	(2,155)	(3,114)	(2,665)	(5,961)
Ending balance of other real estate owned	32,785	37,740	32,785	37,740
Property included in other real estate owned which was not acquired through foreclosure	148		148
Carrying cost and fair value adjustments for foreclosed properties	$ 1,800	$ 500	$ 2,700	$ 1,000