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Goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Dec. 31, 2023
Sep. 30, 2024
Dec. 31, 2023
Goodwill [Roll Forward]        
Beginning balance     $ 509,571 $ 494,101
Acquisitions     46,086 28,083
Adjustments for purchase price allocation of businesses acquired in prior year     (982) 3,187
Impairment of goodwill     (33) (15,800)
Ending balance $ 554,642 $ 509,571 554,642 509,571
Closed Clinic [Member]        
Goodwill [Roll Forward]        
Impairment of goodwill $ (100)   $ (100)  
Industrial Injury Prevention Services [Member]        
Goodwill [Roll Forward]        
Impairment of goodwill   $ (15,800)   $ (15,800)