Annual report pursuant to Section 13 and 15(d)

Note 1 - Nature of Operations and Summary of Significant Accounting Policies - Clinics in Operation Under Franchise Agreements or Company-owned or Managed (Details)

v3.7.0.1
Note 1 - Nature of Operations and Summary of Significant Accounting Policies - Clinics in Operation Under Franchise Agreements or Company-owned or Managed (Details)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Clinics in operation at beginning of period 312      
Clinics in operation at the end of the period 370 312    
Number of Stores 370 312 370 312
Clinic licenses sold but not yet developed     115 168
Franchised Units [Member]        
Clinics in operation at beginning of period 265 242    
Opened during the period 56 54    
Acquired during the period (6) (24)    
Closed during the period (6) (7)    
Clinics in operation at the end of the period 309 265    
Acquired during the period 6 24    
Number of Stores 265 265 309 265
Entity Operated Units [Member]        
Clinics in operation at beginning of period 47 4    
Opened during the period 8 21    
Acquired during the period (6) (24)    
Closed during the period (2)    
Clinics in operation at the end of the period 61 47    
Acquired during the period 6 24    
Number of Stores 47 47 61 47