Annual report pursuant to Section 13 and 15(d)

Deferred Compensation And Retirement Plans - Reconciliation Of Benefit Obligation (Detail)

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Deferred Compensation And Retirement Plans - Reconciliation Of Benefit Obligation (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2020
Apr. 30, 2019
Apr. 30, 2018
Defined Benefit Plan Disclosure [Line Items]      
Total benefit obligation $ 308,279 $ 275,453  
Deferred Compensation Plan      
Defined Benefit Plan Disclosure [Line Items]      
Benefit obligation, beginning of year 148,369 126,494  
Service cost 24,939 17,281 $ 11,373
Interest cost 5,433 5,044 3,787
Actuarial loss 13,427 7,803  
Administrative expenses paid (155) (272)  
Benefits paid from plan assets [1] (3,932) (1,877)  
Benefits paid from cash (6,652) (6,104)  
Plan amendment (608)    
Benefit obligation, end of year 180,821 148,369 126,494
Fair value of plan assets, beginning of year 25,131 26,090  
Actual return on plan assets 2,726 1,160  
Benefits paid from plan assets [1] (3,932) (1,877)  
Administrative expenses paid (155) (272)  
Employer contributions 465 30  
Fair value of plan assets, end of year 24,235 25,131 26,090
Funded status and balance, end of year [2] (156,586) (123,238)  
Current liability 8,887 8,331  
Non-current liability 147,699 114,907  
Total benefit obligation $ 156,586 $ 123,238  
Plan assets weighted average allocation 100.00% 100.00%  
Deferred Compensation Plan | Debt Securities      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets weighted average allocation 43.00% 54.00%  
Deferred Compensation Plan | Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets weighted average allocation 56.00% 45.00%  
Deferred Compensation Plan | Other securities      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets weighted average allocation 1.00% 1.00%  
Executive Capital Accumulation Plan      
Defined Benefit Plan Disclosure [Line Items]      
Benefit obligation, beginning of year $ 130,161 $ 128,430  
Employee contributions 8,215 4,852  
Amortization of employer contributions 6,074 9,573  
Gain on investment (826) 8,697  
Benefits paid from cash (13,911) (20,891)  
Exchange rate fluctuations (398) (500)  
Benefit obligation, end of year 129,315 130,161 $ 128,430
Current liability 9,590 8,844  
Non-current liability 119,725 121,317  
Total benefit obligation $ 129,315 $ 130,161  
[1] The Company amended the Hay Group qualified plan in fiscal 2020 to allow participants that have yet not received benefits to elect a lump-sum payment rather than an annuity payment.  As a result of this plan amendment the benefits paid from plan assets include $2.0 million in payments related to participants making this election. The plan amendment also reduced the Company’s benefit obligation by $0.6 million against other comprehensive income.
[2] The Company purchased COLI contracts insuring the lives of certain employees eligible to participate in the deferred compensation and pension plans as a means of funding benefits under such plans. As of April 30, 2020 and 2019, the Company held contracts with gross CSV of $238.7 million and $219.2 million, offset by outstanding policy loans of $92.3 million and $93.2 million, respectively