Summary of Opening and Closing Balances of Contract Liabilities (Detail) - USD ($) $ in Thousands |
Mar. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Revenue Recognition [Abstract] | ||
| Undelivered elements (training, installation, product and support services) | $ 476 | $ 559 |
| Extended warranty contracts | 1,896 | 2,063 |
| Total deferred revenue | 2,372 | 2,622 |
| Less long-term portion of deferred revenue | 390 | 385 |
| Deferred revenue — current | $ 1,982 | $ 2,237 |
| X | ||||||||||
- Definition Contract with customer liability in extended warranty contracts. No definition available.
|
| X | ||||||||||
- Definition Contract with customer liability in undelivered elements. No definition available.
|
| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|