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Earnings Per Share Data ("EPS") and Stock Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Anti-dilutive weighted average stock options excluded from computation of earnings per share | 4,600,000 | 5,900,000
Unrecognized compensation cost related to unvested options and restricted stock | $ 182,200 |
Stock options granted during period | 2,389,902 |
Market price premium percentage | 10.00% |
Weighted-average grant date fair value, per option | $ 39.65 |
Compensation cost recognized | $ 18,022 | $ 18,047
Stock Options |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Compensation cost recognized, pre-tax charge | 14,800 | 15,300
Restricted Stock |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Compensation cost recognized, pre-tax charge | $ 2,900 | $ 2,400
Unrecognized compensation cost vesting period | 3 years 1 month 6 days |
Restricted shares and restricted units granted during period | 150,860 |
Weighted-average grant date fair value, per share | $ 138.80 |
Unvested Stock option |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Unrecognized compensation cost vesting period | 3 years 1 month 6 days |
Market Price Premium |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Stock options granted during period | 406,982 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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