Quarterly report pursuant to Section 13 or 15(d)

Indebtedness - Narrative (Details)

v3.22.2.2
Indebtedness - Narrative (Details) - USD ($)
1 Months Ended 9 Months Ended
Dec. 31, 2021
Sep. 30, 2017
Sep. 30, 2022
Sep. 30, 2021
Apr. 30, 2020
Debt Instrument [Line Items]          
Proceeds from credit facility     $ 0 $ 45,000,000  
Revolving Credit Facility          
Debt Instrument [Line Items]          
Term   5 years      
Credit facility amount $ 525,000,000 $ 150,000,000     $ 250,000,000
Aggregate principal amount 450,000,000       225,000,000
Additional borrowing capacity of credit facility 75,000,000       $ 25,000,000
Borrowings outstanding 300,000,000        
Repayments of debt 150,000,000        
Available borrowing capacity $ 272,466,000   $ 279,966,000    
Bloomberg short-term bank yield index rate floor 0.00%        
Base rate floor 2.00%        
Federal funds rate floor 0.00%        
Bloomberg short-term bank yield index additional rate 1.00%        
Interest rate at period end     3.33% 1.35%  
Revolving Credit Facility | Medium-term Notes          
Debt Instrument [Line Items]          
Borrowings outstanding $ 150,000,000        
Proceeds from credit facility $ 150,000,000        
Revolving Credit Facility | Bloomberg Short-Term Bank Yield Index | Minimum          
Debt Instrument [Line Items]          
Basis spread on variable rate 1.25%        
Revolving Credit Facility | Bloomberg Short-Term Bank Yield Index | Maximum          
Debt Instrument [Line Items]          
Basis spread on variable rate 1.75%        
Revolving Credit Facility | Federal Funds Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate 0.50%        
Revolving Credit Facility | Prime Rate | Minimum          
Debt Instrument [Line Items]          
Basis spread on variable rate 0.00%        
Revolving Credit Facility | Prime Rate | Maximum          
Debt Instrument [Line Items]          
Basis spread on variable rate 0.50%        
Letter of Credit          
Debt Instrument [Line Items]          
Credit facility amount   30,000,000      
Outstanding amount $ 20,034,000   $ 20,034,000    
Swing Line Loan          
Debt Instrument [Line Items]          
Credit facility amount   $ 30,000,000