Revenue Recognition - Additional Information (Detail) - USD ($) |
3 Months Ended | 9 Months Ended |
|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2018 |
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| Disaggregation Of Revenue [Line Items] | ||
| Revenue from products and services transferred to customers, percentage | 85.00% | 85.00% |
| Revenue from services transferred to customers over time, percentage | 15.00% | 15.00% |
| Revenue recognized from contract liability | $ 200,000 | $ 800,000 |
| Extended warranties recognized | 100,000 | 700,000 |
| Deferred royalties recognized | $ 2,000 | $ 8,000 |
| Maximum | ||
| Disaggregation Of Revenue [Line Items] | ||
| Amortization period to expense incremental costs | 1 year |
| X | ||||||||||
- Definition Amortization period for expense incremental costs. No definition available.
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| X | ||||||||||
- Definition Contract with customer liability, revenue recognized, deferred royalties. No definition available.
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| X | ||||||||||
- Definition Contract with customer liability, revenue recognized, extended warranty. No definition available.
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| X | ||||||||||
- Definition Contract with customer liability, revenue recognized, undelivered elements. No definition available.
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| X | ||||||||||
- Definition Revenue from products and services transferred to customers at a single point in time, percentage. No definition available.
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| X | ||||||||||
- Definition Revenue from services transferred to customers over time, percentage. No definition available.
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| X | ||||||||||
- 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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| X | ||||||||||
- Details
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