Foreclosed Assets Foreclosed Assets (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Foreclosed assets, net	$ 1,329	$ 12,976	$ 22,120	$ 43,721
Loans transferred to foreclosed assets		781	13,472
Other Real Estate and Foreclosed Assets, Other Additions	1,385	0	0
Provision for Other Real Estate Owned and Foreclosed Assets	(2,138)	(2,576)	(5,228)
Sales of Other Real Estate Owned Foreclosed Assets CORES	$ (11,474)	$ (7,349)	$ (29,845)