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Stock-Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Weighted Average Valuation Assumptions Used for Options | Following are the weighted average valuation assumptions used for options:
|  | Three Months Ended March 31, |
|  | 2020 |  |  | 2019 |
Valuation assumptions |  |  |  |  |  |  |  |
Expected dividend yield |  |  | — | % |  |  | — | %
Expected volatility |  |  | 60 | % |  |  | 57 | %
Expected term (years) |  |  | 4.49 |  |  |  | 6.05 |
Risk-free interest rate |  |  | 1.44 | % |  |  | 2.54 | %
Summary of Classification of Stock Based Compensation Expense | The following table presents classification of stock-based compensation expense within the condensed consolidated statements of operations:
|  | Three Months Ended March 31, |
|  | 2020 |  |  | 2019 |
Cost of sales |  | $ | 253 |  |  | $ | 89 |
Research and development |  |  | 508 |  |  |  | 111 |
Sales and marketing |  |  | 93 |  |  |  | 71 |
General and administrative |  |  | 921 |  |  |  | 249 |
Total stock-based compensation |  | $ | 1,775 |  |  | $ | 520 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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