Derivatives (Offsetting Derivatives Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Derivative Assets
Derivatives assets, net amounts of assets presented in the statement of financial position	$ 93,747	$ 43,549
Interest Rate Swap
Derivative Assets
Derivative assets, gross amounts of recognized assets	82,588	38,567
Derivative asset, fair value, gross liability	0	0
Derivatives assets, net amounts of assets presented in the statement of financial position	82,588	38,567
Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract]
Derivative assets, gross amounts not offset in the statement of financial position, financial instruments	(1,223)	(198)
Derivative assets, gross amounts not offset in the statement of financial position, collateral posted	0	0
Derivative assets, net amount	81,365	38,369
Foreign Exchange Contract
Derivative Assets
Derivative assets, gross amounts of recognized assets	131	196
Derivative asset, fair value, gross liability	0	0
Derivatives assets, net amounts of assets presented in the statement of financial position	131	196
Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract]
Derivative assets, gross amounts not offset in the statement of financial position, financial instruments	0	0
Derivative assets, gross amounts not offset in the statement of financial position, collateral posted	0	0
Derivative assets, net amount	$ 131	$ 196