Derivative Financial Instruments Derivative Financial Instruments (Schedule of Notional Amount and Fair Value of Open Foreign Currency Forward Contract) (Details) In Thousands, unless otherwise specified	Dec. 31, 2013 Financial Institution Counterparties [Member] Other Assets [Member] Not Designated as Hedging Instrument [Member] CAD	Dec. 31, 2013 Financial Institution Counterparties [Member] Other Assets [Member] Not Designated as Hedging Instrument [Member] EUR (€)	Dec. 31, 2012 Financial Institution Counterparties [Member] Other Assets [Member] Not Designated as Hedging Instrument [Member] EUR (€)	Dec. 31, 2013 Financial Institution Counterparties [Member] Other Liabilities [Member] Not Designated as Hedging Instrument [Member] CAD	Dec. 31, 2013 Financial Institution Counterparties [Member] Other Liabilities [Member] Not Designated as Hedging Instrument [Member] EUR (€)	Dec. 31, 2013 Customer Counterparties [Member] Other Assets [Member] Not Designated as Hedging Instrument [Member] CAD	Dec. 31, 2013 Customer Counterparties [Member] Other Liabilities [Member] Not Designated as Hedging Instrument [Member] CAD	Dec. 31, 2013 Eurodollar Foreign Exchange Forward [Member] [Member] Financial Institution Counterparties [Member] USD ($)	Dec. 31, 2012 Eurodollar Foreign Exchange Forward [Member] [Member] Financial Institution Counterparties [Member] USD ($)	Dec. 31, 2013 Foreign Exchange Forward [Member] Financial Institution Counterparties [Member] USD ($)	Dec. 31, 2013 Foreign Exchange Forward [Member] Customer Counterparties [Member] USD ($)
Derivative Counter Party [Line Items]
Forward Contracts - Assets, Notional Amount	18,886	€ 1,175	€ 1,093			14,055
Forward Contracts Liability, Notional Amount				14,078	494		18,859
Forward Contracts - Assets Estimated Fair Value								5	3	85	45
Forward Contracts, Liability Estimated Fair Value								$ (4)		$ (23)	$ (58)