Stock-Based Compensation - Summary of Nonvested Restricted Stock Awards and PSU Activity (Parenthetical) (Detail)	9 Months Ended
Sep. 30, 2021 shares
Performance-Based Restricted Stock Units [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Units that could be awarded based upon relative TSR over applicable performance periods.	92,814

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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