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Organization, Nature of Operations and Basis of Presentation - Schedule of Multi Clinic Acquisition (Details) - Clinic
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
February 2016 Acquisition [Member]      
Business Acquisition [Line Items]      
Acquisition date Feb. 29, 2016    
Percentage of interest acquired 55.00%    
Number of clinics 8    
November 2016 Acquisition [Member]      
Business Acquisition [Line Items]      
Acquisition date Nov. 30, 2016    
Percentage of interest acquired 60.00%    
Number of clinics 12    
January 2015 Acquisition [Member]      
Business Acquisition [Line Items]      
Acquisition date   Jan. 31, 2015  
Percentage of interest acquired   60.00%  
Number of clinics   9  
April 2015 Acquisition [Member]      
Business Acquisition [Line Items]      
Acquisition date   Apr. 30, 2015  
Percentage of interest acquired   70.00%  
Number of clinics   3  
June 2015 Acquisition [Member]      
Business Acquisition [Line Items]      
Acquisition date   Jun. 30, 2015  
Percentage of interest acquired   70.00%  
Number of clinics   4  
December 2015 Acquisition [Member]      
Business Acquisition [Line Items]      
Acquisition date   Dec. 31, 2015  
Percentage of interest acquired   59.00%  
Number of clinics   4  
April 2014 Acquisition [Member]      
Business Acquisition [Line Items]      
Acquisition date     Apr. 30, 2014
Percentage of interest acquired     70.00%
Number of clinics     13
August 2014 Acquisition [Member]      
Business Acquisition [Line Items]      
Acquisition date     Aug. 01, 2014
Percentage of interest acquired     100.00%
Number of clinics     3