Other Real Estate Owned and Repossessed Assets - Income and Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income and expenses related to other real estate owned
Net gain (loss) on sale	$ 788	$ 1,214	$ 2,830	$ 3,376
Write-downs	(145)	(363)	(376)	(927)
Net operating expenses	(176)	(360)	(588)	(1,238)
Total	467	491	1,866	1,211
Income and expenses related to repossessed assets
Net gain (loss) on sale	(5)	0	696	(21)
Write-downs	0	0	0	0
Net operating expenses	(8)	(2)	(11)	(10)
Total	$ (13)	$ (2)	$ 685	$ (31)