Derivatives and Hedging Activities (Schedule of Derivative Instruments in Statement of Financial Position, Fair Value) (Details) (Cash Flow Hedging, Interest rate swaps, Designated as Hedging Instrument, Derivatives at Fair Value, USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Cash Flow Hedging | Interest rate swaps | Designated as Hedging Instrument | Derivatives at Fair Value
Derivatives, Fair Value [Line Items]
Derivative assets, at fair value	$ 429	$ 490
Derivative liabilities, at fair value	$ (940)	$ (875)