Share-based Compensation - Additional Information (Detail) $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($)
Time Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum unrecognized cost for stock options	$ 17.7
Unrecognized compensation cost, weighted average period of recognition	1 year 11 months 12 days
2017 LTIP \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Performance adjustment percent	25.00%
Performance measurement period	1 year
Requisite service period	2 years

Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Adjustment Percent

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Measurement Period

+ References

No definition available.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Unrecognized cost of unvested options awarded to employees as compensation.

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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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.

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