Summary of Opening and Closing Balances of Contract Liabilities (Detail) - USD ($) $ in Thousands |
Sep. 30, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Revenue Recognition [Abstract] | ||
| Undelivered elements (training and product and support services; installation for 2017) | $ 558 | $ 980 |
| Extended warranty contracts | 1,694 | 1,634 |
| Deferred royalties | 14 | 22 |
| Total deferred revenue | 2,266 | 2,636 |
| Less long-term amounts: | ||
| Deferred royalties | 3 | 11 |
| Total deferred revenue - long-term | 3 | 11 |
| Total deferred revenue - current | $ 2,263 | $ 2,625 |
| X | ||||||||||
- Definition Contract with customer liability in deferred royalties. No definition available.
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- Definition Contract with customer liability in deferred royalties noncurrent. No definition available.
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- Definition Contract with customer liability in extended warranty contracts. No definition available.
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- Definition Contract with customer liability in undelivered elements. No definition available.
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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