Investment Securities (Realized Gain Loss Table) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Proceeds and gross unrealized gains and losses on sales of available-for-sale securities
Realized gains	$ 2,164	$ 672	$ 2,459	$ 1,064
Realized losses	0	(105)	0	(143)
Net securities (losses)/gains	$ 2,164	$ 567	$ 2,459	$ 921