Subsequent Events - Additional Information (Detail) - Employee Stock Option [Member] - shares |
May 08, 2019 |
Mar. 31, 2019 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Share-based compensation arrangement by share-based payment award, number of shares authorized | 5,000,000 | |
| Subsequent Event [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Number of additional shares authorized | 3,000,000 | |
| Share-based compensation arrangement by share-based payment award, number of shares authorized | 8,000,000 |
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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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- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. No definition available.
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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