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Derivative Financial Instruments - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2015
Oct. 24, 2020
Oct. 26, 2019
Oct. 24, 2020
Oct. 26, 2019
Apr. 25, 2020
Mar. 25, 2015
Jan. 31, 2014
Derivative [Line Items]                
Gains or losses recognized in OCI on cash flow hedging derivative   $ 0   $ 0        
Ineffectiveness recorded during period   0 $ 0 0 $ 0      
Increase (decrease) in interest expense       (1,363,000)        
Interest Rate Cap                
Derivative [Line Items]                
Derivative, Notional Amount   525,000,000   525,000,000        
New Interest Rate Cap                
Derivative [Line Items]                
Derivative, Notional Amount   100,000,000   100,000,000        
Interest Rate Swap Agreement                
Derivative [Line Items]                
Settlement of swap $ 29,003,000   615,000 5,116,000        
Interest Rate Swap Agreement | 5.17% Senior Notes                
Derivative [Line Items]                
Percentage of senior notes               5.17%
Derivative, Notional Amount               $ 250,000,000
Interest Rate Swap Agreement | Senior Notes 3.48%                
Derivative [Line Items]                
Percentage of senior notes             3.48%  
Aggregate principal amount             $ 250,000,000  
Interest Rate Swap                
Derivative [Line Items]                
Increase (decrease) in interest expense   (342,000) $ (725,000) (682,000) $ (1,450,000)      
Derivative, Notional Amount   663,114,000   663,114,000   $ 634,029,000    
Interest Rate Swap Two                
Derivative [Line Items]                
Derivative, Notional Amount   $ 125,458,000   $ 125,458,000