Derivatives (Offsetting Derivatives Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivative Assets
Derivatives Assets, Net Amounts of Assets presented in the Statement of Financial Position	$ 17,921	$ 23,942
Interest Rate Swap [Member]
Derivative Assets
Derivative Assets, Gross Amounts of Recognized Assets	15,965	22,213
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	15,965	22,213
Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract]
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	(4,852)	(16)
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position, Collateral Posted	(2,207)	0
Derivative Assets, Net Amount	$ 8,906	$ 22,197