Summary of Opening and Closing Balances of Contract Liabilities (Detail) - USD ($) $ in Thousands |
Mar. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Revenue Recognition [Abstract] | ||
| Undelivered elements (training, installation, product and support services) | $ 625 | $ 730 |
| Extended warranty contracts | 1,879 | 1,735 |
| Deferred royalties | 9 | 11 |
| Total deferred revenue | 2,513 | 2,476 |
| Deferred revenue — current | $ 2,513 | $ 2,476 |
| X | ||||||||||
- Definition Contract with customer liability in deferred royalties. 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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- 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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| X | ||||||||||
- References No definition available.
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