Quarterly report pursuant to Section 13 or 15(d)

Mergers and Acquisitions - Additional Information (Detail)

v3.23.3
Mergers and Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jul. 03, 2023
Jul. 01, 2023
Jan. 03, 2023
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Business Acquisition, Contingent Consideration [Line Items]              
Business combinations - net of cash acquired and cash held in a fiduciary capacity           $ 366,149 $ 0
Contingent consideration       $ 1,848 $ 423 4,358 (837)
Maximum contingent consideration obligation       92,000   92,000  
Estimated tax deductible goodwill       91,900   91,900  
Revenue       501,938 $ 411,996 1,544,686 $ 1,290,178
Business combination contigent consideration arrangements, non cash investing transactions           8,100  
General and Administrative Expense [Member]              
Business Acquisition, Contingent Consideration [Line Items]              
Business combination, acquisition related costs       800   4,500  
Common Class A [Member]              
Business Acquisition, Contingent Consideration [Line Items]              
Consideration $ 2,700            
Griffin [Member]              
Business Acquisition, Contingent Consideration [Line Items]              
Business combinations - net of cash acquired and cash held in a fiduciary capacity     $ 115,500        
ACE Benefit Partners & Point6 Healthcare [Member]              
Business Acquisition, Contingent Consideration [Line Items]              
Business combinations - net of cash acquired and cash held in a fiduciary capacity   $ 46,800          
Contingent consideration   $ 2,300          
Socius Insurance Services Inc [Member]              
Business Acquisition, Contingent Consideration [Line Items]              
Business combinations - net of cash acquired and cash held in a fiduciary capacity 253,500            
Contingent consideration $ 5,800            
2023 Acquisitions [Member]              
Business Acquisition, Contingent Consideration [Line Items]              
Revenue       $ 17,400   $ 29,000