Annual report pursuant to Section 13 and 15(d)

Segment Reporting - Narrative (Details)

v3.23.3
Segment Reporting - Narrative (Details)
12 Months Ended
Dec. 31, 2022
clinic
segment
Dec. 31, 2021
clinic
Dec. 31, 2020
clinic
Segment Reporting Information [Line Items]      
Number of operating segments | segment 2    
Number of stores 838 706  
Company-Owned or Managed Clinics      
Segment Reporting Information [Line Items]      
Number of stores 126 96 64
Franchised Clinics      
Segment Reporting Information [Line Items]      
Number of stores 712 610 515