XML 76 R41.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Organization, Nature of Operations and Basis of Presentation (Details)
 12 Months Ended
Apr. 11, 2019
State
Location
Apr. 30, 2018
Business
Dec. 31, 2019
Clinic
State
Facility
Dec. 31, 2018
Clinic
Dec. 31, 2017
Clinic
Mar. 31, 2017
Organization, Nature of Operations and Basis of Presentation [Abstract]            
Number of clinics operated     583      
Number of states where clinics are operated | State     40      
Number of third party facilities | Facility     26      
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net [Abstract]            
Percentage of interest acquired         35.00%  
Percentage of general partnership interest owned     1.00%      
Number of clinic practices acquired     1 5 2  
Number of clinics consolidated with an existing clinic       1 1  
Number of clinics that operate as a satellite clinic with existing partnerships     1 1 1  
Minimum [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net [Abstract]            
Percentage of interest acquired     1.00% 5.50%    
Percentage of limited partnership interest owned     24.00%      
Maximum [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net [Abstract]            
Percentage of interest acquired     55.00% 35.00%    
Percentage of limited partnership interest owned     99.00%      
April 2019 Acquisition [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net [Abstract]            
Percentage of interest acquired 76.00%          
Acquisition date     Apr. 11, 2019      
Number of states of network services | State 45          
Number of onsite client locations | Location 11          
Industrial Injury Prevention [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net [Abstract]            
Percentage of interest acquired   65.00%       55.00%
Number of businesses merged | Business   2        
Percentage of combined business interest owned   59.45%