Quarterly report pursuant to Section 13 or 15(d)

Mergers and Acquisitions - Additional Information (Detail)

v3.24.1.u1
Mergers and Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 01, 2023
Jul. 03, 2023
Jul. 01, 2023
Jan. 03, 2023
Mar. 31, 2024
Mar. 31, 2023
Business Acquisition, Contingent Consideration [Line Items]            
Business combinations - net of cash acquired and cash held in a fiduciary capacity         $ 0 $ 102,059
Contingent consideration         (65) 714
Incremental amortization expense on intangible assets acquired           2,700
Increase in transaction costs           2,000
Increase in income tax expense           $ 18,400
Maximum contingent consideration obligation         98,100  
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      
Measurement period adjustment to goodwill         600  
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        
AccuRisk Holdings [Member]            
Business Acquisition, Contingent Consideration [Line Items]            
Business combinations - net of cash acquired and cash held in a fiduciary capacity $ 98,300          
Measurement period adjustment to goodwill         $ 300