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Debt - Additional Information (Details) - USD ($)
1 Months Ended
Mar. 31, 2008
Apr. 27, 2019
Mar. 31, 2019
Apr. 28, 2018
Mar. 31, 2018
Apr. 29, 2017
Line of Credit Facility [Line Items]            
Borrowings on revolving credit   $ 0   $ 16,000,000    
Proceeds used to repay senior notes $ 150,000          
Credit Agreement | Unsecured Term Loan            
Line of Credit Facility [Line Items]            
Borrowings on revolving credit       $ 276,633,000    
Fixed rate       3.40%    
Credit Agreement | Unsecured Revolving Line of Credit            
Line of Credit Facility [Line Items]            
Borrowings on revolving credit       $ 16,000,000    
Fixed rate       2.95%    
Amended Credit Agreement | Unsecured Term Loan            
Line of Credit Facility [Line Items]            
Maximum borrowing capacity           $ 295,075,000
Borrowings on revolving credit   $ 87,091,000        
Fixed rate   3.73%        
Amended Credit Agreement | Unsecured Revolving Line of Credit            
Line of Credit Facility [Line Items]            
Maximum borrowing capacity     $ 500,000,000     $ 750,000,000
Borrowings on revolving credit   $ 0        
Senior Notes Due 2028            
Line of Credit Facility [Line Items]            
Fixed rate   3.79%        
Aggregate principal amount   $ 150,000,000   $ 150,000,000 $ 150,000,000