Derivatives and Hedging Activities (Fair Values of Derivative Instruments on Condensed Consolidated Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 396	$ 245
Liability Derivatives, Fair Value	20,015	21,423
Derivatives not designated as hedging instruments, Asset at Fair Value	49	43
Derivatives not designated as hedging instruments, Liability at Fair Value	0	0
Other Assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	396	245
Derivatives not designated as hedging instruments, Asset at Fair Value	49	43
Interest Rate Swap
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	20,015	21,423
Derivatives not designated as hedging instruments, Liability at Fair Value	$ 0	$ 0