Debt Schedule of Debt (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Current portion of debt	$ 24,375	$ 18,750
Long-term debt	375,000	398,750
Secured Debt [Member]
Debt Instrument [Line Items]
Total debt	399,375	417,500
Current portion of debt	24,375	18,750
Long-term debt	375,000	398,750
USD Denominated Term Loan
Debt Instrument [Line Items]
USD denominated term loan	264,375	277,500
Multicurrency revolving line of credit
Debt Instrument [Line Items]
Multicurrency revolving line of credit	$ 135,000	$ 140,000

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Amount borrowed under the credit facility as of the balance sheet date.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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