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Deferred Compensation and Retirement Plans - Reconciliation of Deferred Compensation and Pension Plans (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2022
Change in fair value of plan assets: |  |  |
Total liability | $ 483,773 | $ 423,753 |
Deferred Compensation Plan |  |  |
Change in benefit obligation: |  |  |
Balance, beginning of year | 246,340 | 211,598 |
Service cost | 43,879 | 40,843 | $ 37,952
Interest cost | 13,447 | 9,511 | 4,028
Actuarial gain | (5,001) | (6,083) |
Administrative expenses paid | (240) | (168) |
Benefits paid from plan assets | (1,988) | (1,901) |
Benefits paid from cash | (15,511) | (7,460) |
Balance, end of year | 280,926 | 246,340 | 211,598
Change in fair value of plan assets: |  |  |
Fair value of plan assets, beginning of year | 19,085 | 21,990 |
Actual return on plan assets | 795 | (836) |
Benefits paid from plan assets | (1,988) | (1,901) |
Administrative expenses paid | (240) | (168) |
Employer contributions | 871 | 0 |
Fair value of plan assets, end of year | 18,523 | 19,085 | $ 21,990
Funded status and balance, end of year | (262,403) | (227,255) |
Current liability | 26,093 | 15,447 |
Non-current liability | 236,310 | 211,808 |
Total liability | $ 262,403 | $ 227,255 |
Plan assets weighted average allocation | 100.00% | 100.00% |
Deferred Compensation Plan | CSV of COLI Contracts |  |  |
Change in fair value of plan assets: |  |  |
Gross CSV | $ 295,900 | $ 275,100 |
Outstanding policy loans | $ 77,000 | $ 77,100 |
Deferred Compensation Plan | Debt securities |  |  |
Change in fair value of plan assets: |  |  |
Plan assets weighted average allocation | 47.00% | 44.00% |
Deferred Compensation Plan | Equity securities |  |  |
Change in fair value of plan assets: |  |  |
Plan assets weighted average allocation | 51.00% | 52.00% |
Deferred Compensation Plan | Other |  |  |
Change in fair value of plan assets: |  |  |
Plan assets weighted average allocation | 2.00% | 4.00% |

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