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Note 14 - Other Supplemental Information (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Other Supplement Information [Table Text Block]
    2016   2015
         
Franchisor operations                
Revenues   $
105,077
     $
98,376
  
Operating earnings    
31,807
      
27,707
  
Initial franchise fee revenues    
6,054
      
5,474
  
Depreciation and amortization    
3,923
      
3,533
  
Total assets    
98,816
      
86,982
  
                 
Cash payments made during the period                
Income taxes   $
9,968
     $
3,358
  
Interest    
8,648
      
4,366
  
                 
Non-cash financing activities                
Increases in capital lease obligations   $
1,785
     $
1,217
  
                 
Other expenses                
Rent expense   $
25,422
     $
20,229