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Debt - Credit Agreement (Details) - Revolving Credit Facility [Member]
$ in Millions
1 Months Ended 12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Long-term debt    
Maximum credit facility borrowing amount $ 100.0 $ 100.0
Interest rate spread (as a percent) 2.00%  
Commitment fees $ 0.3  
Percentage of unused line fee payable on unborrowed amount 0.25%  
Line of credit facility outstanding   $ 0.0
Secured Overnight Financing Rate    
Long-term debt    
Interest rate spread (as a percent) 1.75%  
Alternate Base Rate    
Long-term debt    
Interest rate spread (as a percent) 0.75%