Annual report pursuant to Section 13 and 15(d)

Organization and Summary of Significant Accounting Policies - Additional Information (Detail)

v3.19.2
Organization and Summary of Significant Accounting Policies - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Apr. 30, 2019
USD ($)
Apr. 30, 2019
USD ($)
Segment
Apr. 30, 2018
USD ($)
Segment
Apr. 30, 2017
USD ($)
May 01, 2018
USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items]          
Number of business segments | Segment   3 3    
Dividends received from unconsolidated subsidiary   $ 140,000 $ 240,000 $ 564,000  
Impairment of long-lived assets   0 0 0  
Impairment of goodwill $ 0        
Purchase price allocated to indefinite lived trade name intangible assets 106,600,000 106,600,000      
Performance related bonus expenses   $ 257,300,000 220,400,000 179,600,000  
Percentage that Actuarial gain or loss must exceed the greater of PBO or Market Value Plan Assets   10.00%      
Cash surrender value of company owned life insurance policies, net of loans 126,000,000 $ 126,000,000 120,087,000    
Accounting Standards Update 2014-09 | Adjustments Due to ASC 606          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Increase to retained earnings, net of tax         $ 6,700,000
Accounting Standards Update 2018-02          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Increase to retained earnings, net of tax         $ 2,200,000
CSV of COLI Contracts          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Cash surrender value of company owned life insurance policies, net of loans $ 126,000,000 126,000,000 120,100,000    
General and Administrative Expenses          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Impairment of intangible assets   106,600,000      
Foreign currency gains (losses)   $ (1,700,000) (3,300,000) 300,000  
Compensation Expense | Accounting Standards Update 2017-07          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Reclassification adjustment revised amount     4,600,000 5,800,000  
Other Income | Accounting Standards Update 2017-07          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Reclassification adjustment revised amount     (400,000) (1,500,000)  
Interest Expense | Accounting Standards Update 2017-07          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Reclassification adjustment revised amount     $ (4,200,000) $ (4,400,000)  
Minimum          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Intangible assets estimated useful lives   1 year      
Amortization of long-term retention awards   4 years      
Minimum | Executive Capital Accumulation Plan          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Deferred compensation arrangement vesting period   4 years      
Maximum          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Intangible assets estimated useful lives   24 years      
Amortization of long-term retention awards   5 years      
Maximum | Executive Capital Accumulation Plan          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Deferred compensation arrangement vesting period   5 years      
Software and Software Development Costs | Minimum          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Property and equipment estimated useful life   3 years      
Software and Software Development Costs | Maximum          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Property and equipment estimated useful life   7 years      
Other Capitalized Property Plant and Equipment | Minimum          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Property and equipment estimated useful life   3 years      
Other Capitalized Property Plant and Equipment | Maximum          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Property and equipment estimated useful life   10 years      
Mexico Subsidiary          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Percentage of Noncontrolling interest in subsidiary 51.00% 51.00%      
Affiliated Entity          
Organization And Summary Of Significant Accounting Policies [Line Items]          
Investments in affiliated companies maximum 50.00% 50.00%