Fair Value Of Financial Instruments (Summary Of Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated fair value of long-term debt	$ 419,000,000	$ 429,100,000
Foreign Exchange Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - foreign exchange contracts, Assets	290,000	1,610,000
Derivatives - foreign exchange contracts, Liabilities	6,060,000	730,000
Quoted Prices In Active Markets For Identical Assets Level 1 [Member] | Foreign Exchange Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - foreign exchange contracts, Assets
Derivatives - foreign exchange contracts, Liabilities
Significant Other Observable Inputs Level 2 [Member] | Foreign Exchange Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - foreign exchange contracts, Assets	290,000	1,610,000
Derivatives - foreign exchange contracts, Liabilities	6,060,000	730,000
Significant Unobservable Inputs Level 3 [Member] | Foreign Exchange Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - foreign exchange contracts, Assets
Derivatives - foreign exchange contracts, Liabilities