Stock-Based Compensation - Stock Unit Valuation Assumptions (Detail)	12 Months Ended
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Percentage In Annual Base Salary, Min	50.00%
Share Based Compensation Percentage In Annual Base Salary, Max	100.00%

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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