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Debt Facilities - Narrative (Details)
9 Months Ended
Jan. 31, 2020
USD ($)
Jan. 24, 2020
USD ($)
Jun. 30, 2020
USD ($)
extension
Term Loan Facility      
Debt Instrument [Line Items]      
Aggregate principal amount   $ 400,000,000.0  
Debt issuance costs   $ 2,200,000 $ 1,900,000
Redemption percentage   1.25%  
Long-term line of credit     $ 395,000,000.0
Interest rate at end of period     2.452%
Term Loan Facility | London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Basis spread on variable rate     1.125%
Term Loan Facility | London Interbank Offered Rate (LIBOR) | Minimum      
Debt Instrument [Line Items]      
Basis spread on variable rate   1.125%  
Term Loan Facility | London Interbank Offered Rate (LIBOR) | Maximum      
Debt Instrument [Line Items]      
Basis spread on variable rate   1.75%  
Term Loan Facility | Alternate Base Rate      
Debt Instrument [Line Items]      
Basis spread on variable rate     0.125%
Term Loan Facility | Alternate Base Rate | Minimum      
Debt Instrument [Line Items]      
Basis spread on variable rate   0.125%  
Term Loan Facility | Alternate Base Rate | Maximum      
Debt Instrument [Line Items]      
Basis spread on variable rate   0.75%  
Revolving Credit Facility      
Debt Instrument [Line Items]      
Aggregate principal amount $ 350,000,000.0    
Long-term line of credit     $ 0
Conditional increase in borrowing capacity $ 150,000,000.0    
Number of extensions | extension     2
Length of extension period     1 year
Outstanding line of credit balance     $ 350,000,000.0
Revolving Credit Facility | Minimum      
Debt Instrument [Line Items]      
Commitment fee percentage 0.125%    
Revolving Credit Facility | Maximum      
Debt Instrument [Line Items]      
Commitment fee percentage 0.30%    
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum      
Debt Instrument [Line Items]      
Basis spread on variable rate 1.125%    
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum      
Debt Instrument [Line Items]      
Basis spread on variable rate 1.75%    
Revolving Credit Facility | Alternate Base Rate | Minimum      
Debt Instrument [Line Items]      
Basis spread on variable rate 0.125%    
Revolving Credit Facility | Alternate Base Rate | Maximum      
Debt Instrument [Line Items]      
Basis spread on variable rate 0.75%