Derivative and Hedging Activities Schedule of Dervative Instruments in Statement of Financial Position, Fair Value (Details) (Designated as Hedging Instrument [Member], Derivative Financial Instruments, Liabilities [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ 100
Cash Flow Hedging [Member] | Swap [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	20
Currency Swap [Member] | Swap [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ 33