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v3.20.2

Performance Units (Detail) | 9 Months Ended
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Sep. 30, 2020 shares
2020 |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 500,500
2019 |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 489,800
2018 |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 310,700
2017 |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 186,198
2016 |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Target number of shares | 185,000

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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. + References No definition available. + Details
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