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Stock-Based Compensation (Detail) - (Table 6) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-Based Payment Arrangement [Abstract] |  |  |
Proceeds from Stock Options Exercised | $ 1,205,000 | $ 602,000 | $ 9,732,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | 16,335,000 | 314,000 | 8,622,000
Share-based Payment Arrangement, Exercise of Option, Tax Benefit | $ 1,285,000 | $ 41,000 | $ 1,512,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] |  |  |
Non-vested at January 1 | 2,109,000 | 2,849,000 |
Non-vested at January 1 (in Dollars per share) | $ 28.44 | $ 23.81 |
Granted | 398,000 | 439,000 |
Granted (in Dollars per share) | $ 33.38 | $ 40.30 |
Vested | (1,192,000) | (1,144,000) |
Vested (in Dollars per share) | $ 22.38 | $ 21.25 |
Non-vested at June 30 | 1,278,000 | 2,109,000 | 2,849,000
Non-vested at June 30 (in Dollars per share) | $ 35.44 | $ 28.44 | $ 23.81
Forfeited | (37,000) | (35,000) |
Forfeitures (in dollars per share) | $ 37.82 | $ 34.37 |

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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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