Convertible Preferred Stock and Stockholders' Equity - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands |
9 Months Ended | |
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Sep. 30, 2020 |
Sep. 30, 2019 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Total stock based compensation expenses | $ 4,228 | $ 3,430 |
| Research and development | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Total stock based compensation expenses | 2,176 | 1,501 |
| Sales and marketing expense | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Total stock based compensation expenses | 715 | 1,020 |
| General and administrative expense | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Total stock based compensation expenses | 1,070 | 668 |
| Cost of sales | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Total stock based compensation expenses | $ 267 | $ 241 |
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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