Quarterly report pursuant to Section 13 or 15(d)

Nature of Operations and Summary of Significant Accounting Policies - Clinics in Operation Under Franchise Agreements or Company-owned or Managed (Details)

v3.24.3
Nature of Operations and Summary of Significant Accounting Policies - Clinics in Operation Under Franchise Agreements or Company-owned or Managed (Details) - clinic
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Product Information, Franchised Clinics, Company-Owned Or Managed Clinics, Activity [Roll Forward]        
Closed during the period     (7) (2)
Clinics in operation at the end of the period 963 914 963 914
Clinic licenses sold but not yet developed 102 155 102 155
Future clinic licenses subject to executed letters of intent 46 42 46 42
Franchised Clinics        
Product Information, Franchised Clinics, Company-Owned Or Managed Clinics, Activity [Roll Forward]        
Clinics open at beginning of period 829 756 800 712
Opened during the period 14 24 46 76
Acquired during the period 1 0 3 0
Sold during the period 0 0 0 (3)
Closed during the period (6) (2) (11) (7)
Clinics in operation at the end of the period 838 778 838 778
Company-Owned or Managed Clinics        
Product Information, Franchised Clinics, Company-Owned Or Managed Clinics, Activity [Roll Forward]        
Clinics open at beginning of period 131 134 135 126
Opened during the period 0 2 0 9
Acquired during the period 0 0 0 3
Sold during the period (1) 0 (3) 0
Closed during the period (5) 0    
Clinics in operation at the end of the period 125 136 125 136