Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments (Schedule Of Contracts Designated As Hedged Instruments) (Details)

v2.4.0.8
Derivative Financial Instruments (Schedule Of Contracts Designated As Hedged Instruments) (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Canadian Dollars [Member]
   
Foreign Exchange Contracts [Line Items]    
Foreign exchange contracts, Notional Amount $ 4,376 $ 10,499
Derivative, Maturity Date Feb. 01, 2014 Feb. 01, 2014
Norwegian Kroner [Member]
   
Foreign Exchange Contracts [Line Items]    
Foreign exchange contracts, Notional Amount 7,320 7,131
Derivative, Maturity Date Aug. 01, 2014 Feb. 01, 2014
British Pounds [Member]
   
Foreign Exchange Contracts [Line Items]    
Foreign exchange contracts, Notional Amount 1,228 1,452
Derivative, Maturity Date Aug. 01, 2014 Feb. 01, 2014
Euros [Member]
   
Foreign Exchange Contracts [Line Items]    
Foreign exchange contracts, Notional Amount 25,706 17,186
Derivative, Maturity Date Feb. 01, 2015 Feb. 01, 2014
Swiss Francs [Member]
   
Foreign Exchange Contracts [Line Items]    
Foreign exchange contracts, Notional Amount 34,297 23,838
Derivative, Maturity Date Feb. 01, 2015 Feb. 01, 2014
Japanese Yen [Member]
   
Foreign Exchange Contracts [Line Items]    
Foreign exchange contracts, Notional Amount 946,547  
Derivative, Maturity Date Feb. 01, 2015  
Swedish Kronor [Member]
   
Foreign Exchange Contracts [Line Items]    
Foreign exchange contracts, Notional Amount $ 6,034  
Derivative, Maturity Date Feb. 01, 2015