Foreign Currency Exchange Contracts and Hedging - Additional Information (Details) |
12 Months Ended | ||
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Dec. 31, 2017
USD ($)
Contract
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Dec. 31, 2016
USD ($)
Contract
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Dec. 31, 2015
USD ($)
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| Derivatives Fair Value [Line Items] | |||
| Number of contract designated hedges | Contract | 18 | 4 | |
| Number of contract non-designated hedges | Contract | 3 | 2 | |
| Non-Designated Derivative Contracts | |||
| Derivatives Fair Value [Line Items] | |||
| Derivative contracts notional amounts | $ 2,350,000 | $ 456,000 | |
| Designated Derivative Contracts | |||
| Derivatives Fair Value [Line Items] | |||
| Derivative contracts notional amounts | 13,818,000 | 911,000 | |
| Unrealized (loss) gain on derivative | $ (121,000) | $ 47,000 | $ (14,000) |
| Minimum | |||
| Derivatives Fair Value [Line Items] | |||
| Derivative contracts expiration period | 1 month | ||
| Maximum | |||
| Derivatives Fair Value [Line Items] | |||
| Derivative contracts expiration period | 9 months | ||
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- Definition Number of contract designated hedges. No definition available.
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- Definition Number of contract non-designated hedges. No definition available.
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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