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Foreign Currency Derivatives - Offsetting of Derivative Liabilities (Details) (Foreign exchange contract, USD $)
In Thousands, unless otherwise specified |
Mar. 15, 2015
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Dec. 31, 2014
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Foreign exchange contract
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| Offsetting Liabilities [Line Items] | ||
| Gross Amounts of Recognized Liabilities | $ 12,651 | $ 8,175 |
| Net Amounts Of Liabilities Presented In the Condensed Consolidated Balance Sheets | 12,651 | 8,175 |
| Gross Amounts of Liabilities Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments | (12,445) | (8,175) |
| Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Net Amount | $ 206 |