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Summary of Components of Tax (Benefit) Expense Related To Equity Plan (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Tax (benefit) expense related to: |  |  |  |
Share-based compensation expense | $ (3,417) | $ (2,906) | $ (9,396) | $ (9,146)
Exercises of stock options and vesting of share-settled restricted stock units | 813 | 680 | 1,098 | 790
Total tax benefit related to the Company's equity plans | $ (2,604) | $ (2,226) | $ (8,298) | $ (8,356)

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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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