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Stock-based Compensation - Performance Units (Detail) | 12 Months Ended
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Dec. 31, 2021 shares
Year Twenty Twenty One [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 843,000
Year Twenty Twenty [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 500,500
Year Twenty Nineteen [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 489,800
Year Twenty Eighteen [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 310,700
Year Twenty Seventeen [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 186,198
Year Twenty Sixteen [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 185,000

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