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v3.19.1

Stock-Based Compensation - Summary of Stock Option Activity (Parenthetical) (Details) - Options Issued and Outstanding | 3 Months Ended
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Mar. 31, 2019 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Stock options granted | 604,440
Non-employees |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Stock options granted | 9,840

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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. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |