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Financial Instruments (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Jun. 30, 2012
Foreign Exchange Contracts [Member]
Dec. 31, 2011
Foreign Exchange Contracts [Member]
Jun. 30, 2012
Interest Rate Swaps [Member]
Jan. 01, 2011
Interest Rate Swaps [Member]
Y
Jan. 01, 2011
Forward Interest Rate Swap Agreement [Member]
Derivative [Line Items]            
Foreign currency derivatives notional value   $ 19.6 $ 39.4      
Notional amount of interest rate swap           15.0
Term of derivative contracts, years         3  
Interest rate on portion of the Company's line of credit       1.20%    
Amount included as a component of accumulated other comprehensive loss $ 0.1