Stock-Based Compensation - Schedule of Stock-based Compensation Expense Recorded in Operating Expenses (Details) - USD ($) $ in Thousands |
3 Months Ended | |
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Mar. 31, 2019 |
Mar. 31, 2018 |
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| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||
| Stock-based compensation in operating expenses | $ 7,229 | $ 448 |
| Selling, General and Administrative [Member] | ||
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||
| Stock-based compensation in operating expenses | 6,319 | 370 |
| Research and Development [Member] | ||
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||
| Stock-based compensation in operating expenses | $ 910 | $ 78 |
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. 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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