Annual report pursuant to Section 13 and 15(d)

Indebtedness - Narrative (Details)

v3.22.4
Indebtedness - Narrative (Details) - USD ($)
1 Months Ended 12 Months Ended
Dec. 31, 2021
Jul. 31, 2021
Sep. 30, 2017
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Apr. 30, 2020
Debt Instrument [Line Items]              
Proceeds from credit facility       $ 0 $ 195,000,000 $ 65,000,000  
Cash payments for interest       5,355,000 4,198,000 4,580,000  
Interest capitalized       0 0 $ 0  
Revolving Credit Facility              
Debt Instrument [Line Items]              
Term     5 years        
Credit facility amount $ 525,000,000   $ 150,000   525,000,000   $ 250,000,000
Aggregate principal amount 450,000,000       450,000,000   225,000,000
Additional borrowing capacity of credit facility 75,000,000       75,000,000   $ 25,000,000
Outstanding under the senior credit facility 300,000,000       300,000,000    
Repayments of debt 150,000,000            
Available borrowing capacity $ 272,466,000     $ 279,966,000 $ 272,466,000    
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 1.43%     4.85% 1.43%    
Revolving Credit Facility | Medium-term Notes              
Debt Instrument [Line Items]              
Outstanding under the senior credit facility $ 150,000,000       $ 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        
Outstanding letters of credit $ 20,034,000     $ 20,034,000 $ 20,034,000    
Swing Line Loan              
Debt Instrument [Line Items]              
Credit facility amount     $ 30,000