Derivative Financial Instruments Derivative Financial Instruments (Tables)
| 9 Months Ended |
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Sep. 30, 2011 |
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| Derivative Financial Instruments [Abstract] | |
| Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] | The fair values of our derivative instruments determined using the fair value measurement of significant other observable inputs (Level 2) at September 30, 2011 and December 31, 2010 are as follows: | | | | | | | | | | | | | | | | Fair Value | | | Balance Sheet Location | | September 30,
2011 | | December 31,
2010 | | | | | (in thousands) | Asset Derivatives | | | | | Derivatives not designated as hedging instruments under ASC 815-20 | | | | | Foreign exchange forward contracts | | Other current assets | | $ | 175 |
| | $ | 63 |
| | | | | | | | Liability Derivatives | | | | | | | Derivatives designated as hedging instruments under ASC 815-20 | | | | | Interest rate swap contracts | | Other current liabilities | | $ | — |
| | $ | 5,845 |
| Interest rate swap contracts | | Other long-term obligations | | — |
| | 975 |
| Euro denominated term loan * | | Current portion of debt | | — |
| | 4,402 |
| Euro denominated term loan * | | Long-term debt | | — |
| | 169,629 |
| Total derivatives designated as hedging instruments under ASC 815-20 | | $ | — |
| | $ | 180,851 |
| | | | | | Derivatives not designated as hedging instruments under ASC 815-20 | | | | | Foreign exchange forward contracts | | Other current liabilities | | $ | 342 |
| | $ | 457 |
| | | | | | | | Total liability derivatives | | | | $ | 342 |
| | $ | 181,308 |
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* The euro denominated term loan was a nonderivative financial instrument designated as a hedge of our net investment in international operations. The loan was repaid on August 8, 2011. The euro denominated term loan was recorded at its carrying value in the Consolidated Balance Sheets and was not recorded at fair value. |
| Accumulated OCI for Derivative and Nonderivative Instruments Designated as Hedging Instruments, Net of Tax [Table Text Block] | OCI during the reporting period for our derivative and nonderivative instruments designated as hedging instruments (collectively, hedging instruments), net of tax, was as follows: | | | | | | | | | | 2011 | | 2010 | | (in thousands) | Net unrealized loss on hedging instruments at January 1, | $ | (10,034 | ) | | $ | (30,300 | ) | Unrealized gain (loss) on derivative instruments | 1,922 |
| | (2,920 | ) | Unrealized gain (loss) on a nonderivative net investment hedging instrument | (8,854 | ) | | 12,203 |
| Realized (gains) losses reclassified into net income (loss) | 2,598 |
| | 5,874 |
| Net unrealized loss on hedging instruments at September 30, | $ | (14,368 | ) | | $ | (15,143 | ) |
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| Effect of Cash Flow Derivatives on the Balance Sheet and Income Statement, Before Tax [Table Text Block] | The before-tax effect of our cash flow derivative instruments on the Consolidated Balance Sheets and the Consolidated Statements of Operations for the three and nine months ended September 30 are as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Derivatives in ASC 815-20 Cash Flow Hedging Relationships | | Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) | | Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) | | Gain (Loss) Recognized in Income on Derivative (Ineffective Portion) | Location | | Amount | | Location | | Amount | | | 2011 | | 2010 | | | | 2011 | | 2010 | | | | 2011 | | 2010 | | | (in thousands) | | | | (in thousands) | | | | (in thousands) | Three Months Ended September 30, | | | | | | | | | | | | | | | | | Interest rate swap contracts | | $ | 277 |
| | $ | (603 | ) | | Interest expense | | $ | (3,083 | ) | | $ | (2,715 | ) | | Interest expense | | $ | (121 | ) | | $ | (11 | ) | | | | | | | | | | | | | | | | | | Nine Months Ended September 30, | | | | | | | | | | | | | | | | | Interest rate swap contracts | | $ | (4,200 | ) | | $ | (4,725 | ) | | Interest expense | | $ | (7,254 | ) | | $ | (9,525 | ) | | Interest expense | | $ | (201 | ) | | $ | (85 | ) |
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| Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The before tax and net of tax effects of our net investment hedge nonderivative financial instrument on OCI for the three and nine months ended September 30 are as follows: | | | | | | | | | | | | | | | | | | Nonderivative Financial Instruments in ASC 815-20 Net Investment Hedging Relationships | | Euro Denominated Term Loan Designated as a Hedge of Our Net Investment in International Operations | | | Three Months Ended
September 30, | | Nine Months Ended
September 30, | | | 2011 | | 2010 | | 2011 | | 2010 | | | (in thousands) | Gain (loss) recognized in OCI on derivative (Effective Portion) | | | | | | | | | Before tax | | $ | 645 |
| | $ | (19,703 | ) | | $ | (14,278 | ) | | $ | 19,795 |
| Net of tax | | $ | 408 |
| | $ | (12,149 | ) | | $ | (8,854 | ) | | $ | 12,203 |
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| Foreign Exchange Derivatives Not Designated As Hedging Instruments [Table Text Block] | The effect of our foreign exchange forward derivative instruments on the Consolidated Statements of Operations for the three and nine months ended September 30 is as follows: | | | | | | | | | | | | | | | | | | Derivatives Not Designated as Hedging Instrument under ASC 815-20 | | Gain (Loss) Recognized on Derivatives in Other Income (Expense) | | Three Months Ended
September 30, | | Nine Months Ended
September 30, | | | 2011 | | 2010 | | 2011 | | 2010 | | | (in thousands) | Foreign exchange forward contracts | | $ | 2,464 |
| | $ | (803 | ) | | $ | (877 | ) | | $ | 2,244 |
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