Stock-Based Compensation (Details) |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
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Jun. 30, 2018
shares
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Mar. 31, 2018
shares
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Jun. 30, 2018
tranche
shares
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| Stock-Based compensation | |||
| Maximum number of shares available for future issuance | 3,091,345 | 3,091,345 | |
| Unvested restricted stock units and awards | |||
| Stock-Based compensation | |||
| Number of shares vested | 253,279 | 503,668 | |
| Performance-based restricted stock unit awards | |||
| Stock-Based compensation | |||
| Number of shares vested | 26,000 | ||
| Threshold percentage of metrics to be achieved | 100.00% | ||
| Number of annual tranches | tranche | 3 | ||
| Performance-based restricted stock unit awards | Minimum | |||
| Stock-Based compensation | |||
| Number of shares to vest upon each evaluation date (as a percent) | 50.00% | 50.00% | |
| Performance-based restricted stock unit awards | Maximum | |||
| Stock-Based compensation | |||
| Number of shares to vest upon each evaluation date (as a percent) | 150.00% | 150.00% | |
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- Definition Represents the number of annual tranches during which time shares would vest. No definition available.
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- Definition Number of equity based instruments to be vested upon each evaluation date in percentage. No definition available.
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- Definition Represents the threshold percentage of metrics to be achieved. No definition available.
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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