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Derivatives Balance Sheet Location (Details) (USD $)
3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2014
Foreign Exchange Forward [Member]
Mar. 31, 2013
Foreign Exchange Forward [Member]
Mar. 31, 2014
Foreign Exchange Forward [Member]
Designated as Hedging Instrument [Member]
Dec. 31, 2013
Foreign Exchange Forward [Member]
Designated as Hedging Instrument [Member]
Mar. 31, 2014
Foreign Exchange Forward [Member]
Not Designated as Hedging Instrument [Member]
Dec. 31, 2013
Foreign Exchange Forward [Member]
Not Designated as Hedging Instrument [Member]
Mar. 31, 2014
Interest Rate Swap [Member]
Designated as Hedging Instrument [Member]
Dec. 31, 2013
Interest Rate Swap [Member]
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]                    
Notional Amount of Derivatives, Matured During Period     $ 33,623,000 $ 33,494,000            
Derivative Assets 599,000 789,000     568,000 414,000 31,000 375,000 0 0
Interest Rate Derivative Liabilities, at Fair Value $ 2,321,000 $ 1,212,000     $ 1,941,000 $ 1,195,000 $ 376,000 $ 5,000 $ 4,000 $ 12,000