Derivatives (Offsetting Derivatives Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Derivative Assets
Derivatives Assets, Net Amounts of Assets presented in the Statement of Financial Position	$ 75,580	$ 43,549
Interest Rate Swap [Member]
Derivative Assets
Derivative Assets, Gross Amounts of Recognized Assets	66,728	38,567
Derivative Asset, Fair Value, Gross Liability	0	0
Derivatives Assets, Net Amounts of Assets presented in the Statement of Financial Position	66,728	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	(181)	(198)
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position, Collateral Posted	0	0
Derivative Assets, Net Amount	66,547	38,369
Foreign Exchange Contract [Member]
Derivative Assets
Derivative Assets, Gross Amounts of Recognized Assets	597	196
Derivative Asset, Fair Value, Gross Liability	0	0
Derivatives Assets, Net Amounts of Assets presented in the Statement of Financial Position	597	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	$ 597	$ 196