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Acquisitions - Narrative (Details) - USD ($)
3 Months Ended 7 Months Ended 9 Months Ended 13 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2022
Sep. 30, 2022
Sep. 30, 2021
Feb. 21, 2022
Business Acquisition [Line Items]              
Goodwill acquired during period       $ 48,768,000     $ 127,400,000
Goodwill deductible for tax purposes $ 2,000,000   $ 2,000,000 2,000,000 $ 2,000,000    
Transaction (gain) expense (300,000) $ 100,000   4,600,000   $ 6,200,000  
Customer relationships | Series of Individually Immaterial Asset Acquisitions              
Business Acquisition [Line Items]              
Finite-lived intangible assets acquired 0 $ 0   $ 0   $ 0  
BA Insight              
Business Acquisition [Line Items]              
Revenues since acquisition date 2,400,000   $ 5,200,000        
Objectif Lune              
Business Acquisition [Line Items]              
Revenues since acquisition date $ 5,100,000       $ 15,500,000