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Commitments and Contingencies - Other (Details)
$ in Millions
9 Months Ended
Sep. 30, 2023
USD ($)
item
Dec. 31, 2022
USD ($)
item
Commitments and Contingencies    
Restricted cash pledged for letter of credit $ 5.6 $ 6.8
Number of Months from start of lease for adjustments to Letter of Credit | item 37  
Adjustment rate of Letter of Credit (as a percent) 20.00%  
Amount of Letter of Credit outstanding after adjustments $ 2.0  
Number of other irrevocable letters of credit outstanding | item 1 1
Restricted cash pledged for office lease agreement $ 0.2 $ 0.2
Deferred compensation plan liability 10.3 8.2
Deferred Compensation Plan Assets $ 10.4 $ 8.4