Financial Instruments (Carrying Amount And The Estimated Fair Values Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 88,279	[1]	$ 131,332	[1]
Credit facilities and bank overdrafts	158,971	[2]	61,396	[2]
Japanese yen note			22,274	[3]
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	88,279	[1]	131,332	[1]
Credit facilities and bank overdrafts	158,971	[2]	61,396	[2]
Japanese yen note			22,274	[3]
Senior Notes - 2007 [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	500,000	[4]	500,000	[4]
Senior Notes - 2007 [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	617,000	[4]	585,000	[4]
Senior Notes - 2006 [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	225,000	[4]	325,000	[4]
Senior Notes - 2006 [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 250,000	[4]	$ 357,000	[4]

[1] The carrying amount of cash and cash equivalents approximates fair value due to the short maturity of those instruments.

[2] The carrying amount of our credit facilities and bank overdrafts approximates fair value as the interest rate is based on current market rates as well as the short maturity of those instruments.

[3] The carrying amount of the Japanese yen note approximates fair value due to its short maturity.

[4] The fair value of our long-term debt was calculated using discounted cash flows applying current interest rates and current credit spreads based on our own credit risk.