Other Real Estate Owned and Repossessed Assets (Income and Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income and expenses related to other real estate owned
Net gain (loss) on sale	$ 5,325	$ 4,128	$ 2,545
Write-downs	(636)	(1,421)	(648)
Net operating expenses	(740)	(1,604)	(1,242)
Total	3,949	1,103	655
Income and expenses related to repossessed assets
Net gain (loss) on sale	523	(26)	(11)
Write-downs	0	0	0
Net operating expenses	(60)	(19)	(53)
Total	$ 463	$ (45)	$ (64)