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Debt (Additional Information) (Detail) - USD ($)
3 Months Ended 12 Months Ended
Mar. 24, 2020
Apr. 13, 2018
Dec. 31, 2016
Jun. 30, 2020
Jun. 30, 2019
Line of Credit Facility [Line Items]          
Letters of credit outstanding     $ 68,400,000 $ 68,400,000 $ 68,400,000
Letter Of Credit Title Iv Disbursement Percentage     0.10%    
Letter of credit, repayment period     5 years    
Commitment fee percentage       0.40%  
Credit annual fee percentage reimbursement       2.00%  
Annual fee percentage       2.25%  
Debt Instrument, Issuance Date   Apr. 13, 2018      
Outstanding letters of credit       $ 231,600,000  
Long-term debt       289,115,000 401,094,000
Available increase in line of credit facility   $ 250,000,000      
Long-term Line of Credit       294,000,000.0 407,000,000.0
Debt issuance costs, gross   $ 9,900,000      
Long-term debt, gross       294,000,000 $ 407,000,000
Term Loan [Member]          
Line of Credit Facility [Line Items]          
Debt Covenant, Mandatory Cash Payment In Excess Of Amount Minimum       $ 50,000,000  
Interest rate for borrowings under the Term B Loan facility       3.18% 5.40%
Debt instrument, maturity date   Apr. 13, 2025      
Debt instrument, face amount   $ 300,000,000      
Principal payment   750,000      
Debt issuance costs, gross   $ 7,100,000      
Amortization period   7 years      
Debt covenant reinvested term       1 year  
Eurocurrency Rate [Member] | Term Loan [Member]          
Line of Credit Facility [Line Items]          
Debt instrument, description of variable rate basis       LIBOR-equivalent rate plus 3%  
Basic spread rate       3.00%  
Annual interest rate       0.03%  
Base Rate [Member] | Term Loan [Member]          
Line of Credit Facility [Line Items]          
Debt instrument, description of variable rate basis       base rate plus 2%  
Basic spread rate       2.00%  
Revolver [Member]          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity   $ 300,000,000      
Line of credit facility, expiration date   Apr. 13, 2023      
Foreign currency borrowing capacity   $ 200,000,000      
Long-term Line of Credit       $ 0  
Debt issuance costs, gross   $ 2,700,000      
Amortization period   5 years      
Long-term debt, gross         $ 110,000,000
Revolver [Member] | Minimum          
Line of Credit Facility [Line Items]          
Application rate, percentage       1.75%  
Revolver [Member] | Maximum          
Line of Credit Facility [Line Items]          
Application rate, percentage       2.75%  
Revolver [Member] | Weighted Average          
Line of Credit Facility [Line Items]          
Application rate, percentage         4.66%
Revolver [Member] | Prime Rate [Member] | Minimum          
Line of Credit Facility [Line Items]          
Application rate, percentage       0.75%  
Revolver [Member] | Prime Rate [Member] | Maximum          
Line of Credit Facility [Line Items]          
Application rate, percentage       1.75%  
Letter of Credit [Member]          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity   $ 100,000,000      
Interest Rate Swap | Term Loan [Member]          
Line of Credit Facility [Line Items]          
Derivative, Fixed Interest Rate 0.946%        
Derivative, Swaption Interest Rate       3.946%  
Interest Rate Swap | LIBOR | Term Loan [Member]          
Line of Credit Facility [Line Items]          
Debt instrument, description of variable rate basis one-month LIBOR        
Interest Rate Swap | LIBOR | Maximum | Term Loan [Member]          
Line of Credit Facility [Line Items]          
Derivative, Floor Interest Rate 0.00%