Derivative Financial Instruments (Tables)
| 9 Months Ended |
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Sep. 30, 2011 |
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| Derivative Financial Instruments [Abstract] | |
| Aggregate Notional Principal Amounts Of Outstanding Derivative Instruments Together With Related Balance Sheet Exposure | |
| Fair Value Of Derivative Instruments And Location On Financial Statements |
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Cash flow |
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Non-designated |
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As of December 31, 2010 |
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As of September 30, 2011 |
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As of December 31, 2010 |
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As of September 30, 2011 |
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Assets |
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Prepaid expenses and other current assets |
|
$ |
10,186 |
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$ |
8,658 |
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$ |
1,202 |
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$ |
— |
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Other assets |
|
$ |
26,638 |
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|
$ |
4,353 |
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$ |
— |
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$ |
— |
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Liabilities |
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Accrued expenses and other current liabilities |
|
$ |
44,577 |
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$ |
24,868 |
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|
$ |
58 |
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$ |
12,311 |
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Other liabilities |
|
$ |
19,728 |
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|
$ |
62,272 |
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$ |
— |
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$ |
— |
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| Summary Of Gains / Losses Recognized In Accumulated Other Comprehensive Income (Loss) | |