Stock-Based Compensation - Schedule of Stock-based Compensation Expense Recorded in Operating Expenses (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
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| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||||
| Stock-based compensation in operating expenses | $ 6,640 | $ 4,419 | $ 13,869 | $ 4,867 |
| Selling, General and Administrative [Member] | ||||
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||||
| Stock-based compensation in operating expenses | 6,364 | 3,588 | 12,683 | 3,958 |
| Research and Development [Member] | ||||
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||||
| Stock-based compensation in operating expenses | $ 276 | $ 831 | $ 1,186 | $ 909 |
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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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