Summary of Revenues Disaggregated by Timing of Goods and Services Transferred (Detail) - USD ($) $ in Thousands |
3 Months Ended | |
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Mar. 31, 2019 |
Mar. 31, 2018 |
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| Disaggregation Of Revenue [Line Items] | ||
| Net revenue | $ 10,326 | $ 10,020 |
| Revenue Recognized Over Time | ||
| Disaggregation Of Revenue [Line Items] | ||
| Net revenue | 1,698 | 1,700 |
| Revenue Recognized at a Point in Time | ||
| Disaggregation Of Revenue [Line Items] | ||
| Net revenue | $ 8,628 | $ 8,320 |
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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 Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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