Quarterly report pursuant to Section 13 or 15(d)

Segment Reporting - Narrative (Details)

v3.20.2
Segment Reporting - Narrative (Details)
9 Months Ended
Sep. 30, 2020
clinic
segment
Jun. 30, 2020
clinic
Dec. 31, 2019
clinic
Sep. 30, 2019
clinic
Jun. 30, 2019
clinic
Dec. 31, 2018
clinic
Number of operating segments | segment 2          
Number of non-operating segments | segment 1          
Number of Stores 560     488    
Company-owned or managed clinics            
Number of Stores 63 62 60 58 51 48
Franchised clinics            
Number of Stores 497 477 453 430 417 394