v3.22.0.1
Debt (Details)
12 Months Ended
Feb. 09, 2021
USD ($)
bank
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Line of Credit Facility [Line Items]        
Debt outstanding   $ 0 $ 0  
Number of banks to which the company is party to a credit agreement | bank 2      
Outstanding borrowings   0    
Letters of credit outstanding   400,000    
Remaining borrowing capacity   199,600,000    
Total interest paid   400,000 200,000 $ 200,000
Total interest capitalized   $ 0 $ 0 $ 0
Credit Agreement        
Line of Credit Facility [Line Items]        
Calculated maximum borrowings $ 200,000,000.0      
Available increase in borrowings under credit agreement $ 100,000,000.0      
Credit Agreement | Minimum        
Line of Credit Facility [Line Items]        
Percentage of commitment fee 0.20%      
Credit Agreement | Maximum        
Line of Credit Facility [Line Items]        
Percentage of commitment fee 0.325%      
Credit Agreement | Credit Agreement Interest Rate Option One | Minimum | London Interbank Offered Rate (LIBOR)        
Line of Credit Facility [Line Items]        
Debt instrument basis spread on variable rate 1.00%      
Credit Agreement | Credit Agreement Interest Rate Option One | Maximum | London Interbank Offered Rate (LIBOR)        
Line of Credit Facility [Line Items]        
Debt instrument basis spread on variable rate 1.875%      
Credit Agreement | Credit Agreement Interest Rate Option Two | London Interbank Offered Rate (LIBOR)        
Line of Credit Facility [Line Items]        
Debt instrument basis spread on variable rate 1.00%      
Credit Agreement | Credit Agreement Interest Rate Option Two | Minimum | Base Rate        
Line of Credit Facility [Line Items]        
Debt instrument basis spread on variable rate   0.00%    
Credit Agreement | Credit Agreement Interest Rate Option Two | Maximum | Federal Funds Rate        
Line of Credit Facility [Line Items]        
Debt instrument basis spread on variable rate 0.50%      
Credit Agreement | Credit Agreement Interest Rate Option Two | Maximum | Base Rate        
Line of Credit Facility [Line Items]        
Debt instrument basis spread on variable rate 0.375%