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Debt Facilities - Narrative (Details)
2 Months Ended 3 Months Ended 9 Months Ended
May 26, 2023
Dec. 15, 2022
USD ($)
Jan. 31, 2020
USD ($)
Jan. 24, 2020
USD ($)
Dec. 15, 2022
Jun. 30, 2022
Jun. 30, 2023
USD ($)
extension
Jun. 30, 2022
USD ($)
Sep. 30, 2022
USD ($)
Debt Instrument [Line Items]                  
Payments on term debt agreement             $ 350,000,000 $ 15,000,000  
Term Loan Facility                  
Debt Instrument [Line Items]                  
Aggregate principal amount       $ 400,000,000          
Redemption percentage       1.25%          
Debt issuance costs       $ 2,200,000         $ 200,000
Long-Term Debt                 $ 350,000,000
Payments on term debt agreement   $ 350,000,000              
Interest Expense, Long-Term Debt   $ 3,000,000              
Line of Credit Facility, Interest Rate During Period         4.072% 2.092%   1.553%  
Term Loan Facility | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       1.125%          
Term Loan Facility | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       1.75%          
Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Aggregate principal amount     $ 350,000,000            
Conditional increase in borrowing capacity     $ 150,000,000            
Number of extensions | extension             2    
Length of extension period             1 year    
Long-term line of credit             $ 0    
Outstanding line of credit balance             $ 350,000,000    
Debt Instrument, Interest Rate, Basis for Effective Rate 0.10                
Revolving Credit Facility | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 1.125%   1.125%            
Commitment fee percentage     0.125%            
Revolving Credit Facility | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 1.75%   1.75%            
Commitment fee percentage     0.30%            
Revolving Credit Facility | Alternate Base Rate | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.125%   0.125%            
Revolving Credit Facility | Alternate Base Rate | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.75%   0.75%