Derivatives (Offsetting Derivatives Assets) (Details) (Interest Rate Swap [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Interest Rate Swap [Member]
Derivative Assets
Derivative Assets, Gross Amounts of Recognized Assets	$ 18,963	$ 15,965
Derivative Assets, Gross Amounts Offset in the Statement of Financial Position	0	0
Derivatives Assets, Net Amounts of Assets presented in the Statement of Financial Position	18,963	15,965
Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract]
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	2,406	(4,852)
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position, Collateral Posted	(15,946)	(2,207)
Derivative Assets, Net Amount	$ 5,423	$ 8,906