Deferred Compensation And Retirement Plans - Components of Net Periodic Benefits Costs (Detail) - Deferred Compensation Plan - USD ($) $ in Thousands |
12 Months Ended | ||||
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Apr. 30, 2019 |
Apr. 30, 2018 |
Apr. 30, 2017 |
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Defined Benefit Plan Disclosure [Line Items] | |||||
Service cost | $ 17,281 | $ 11,373 | $ 5,402 | ||
Interest cost | 5,044 | 3,787 | 3,925 | ||
Amortization of actuarial loss (gain) | 1,798 | 2,308 | 3,051 | ||
Expected return on plan assets | (1,568) | (1,594) | (1,559) | ||
Net periodic benefit cost | [1] | $ 22,555 | $ 15,874 | $ 10,819 | |
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. No definition available.
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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