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Foreign Exchange Forward Contracts - Summary of Financial Assets and Liabilities Included in Consolidated Balance Sheets (Detail) (USD $)
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Dec. 31, 2014
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Dec. 31, 2013
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|---|---|---|
| Derivatives, Fair Value [Line Items] | ||
| Net Amounts of Assets Presented in the Consolidated Balance Sheet | $ 298,000 | $ 0 |
| Net Amounts of Liabilities Presented in the Consolidated Balance Sheet | 4,850,000 | 0 |
| Foreign Exchange Forward Contracts [Member] | ||
| Derivatives, Fair Value [Line Items] | ||
| Gross Amounts of Recognized Assets | 2,037,000 | |
| Gross Amounts of Offset in the Consolidated Balance Sheet | (1,739,000) | |
| Net Amounts of Assets Presented in the Consolidated Balance Sheet | 298,000 | |
| Gross Amounts of Recognized Liabilities | 6,589,000 | |
| Gross Amounts of Offset in the Consolidated Balance Sheet | (1,739,000) | |
| Net Amounts of Liabilities Presented in the Consolidated Balance Sheet | $ 4,850,000 |