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INTANGIBLE ASSETS, NET (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Finite Lived Intangible Assets [Line Items]    
Total $ 33,909 $ 30,296
Tradenames [Member]    
Finite Lived Intangible Assets [Line Items]    
Total 19,784 17,660
Accumulated amortization $ 212 170
Estimated useful life 6 years  
Referral Relationships [Member]    
Finite Lived Intangible Assets [Line Items]    
Total $ 12,108 10,866
Accumulated amortization $ 4,438 3,763
Referral Relationships [Member] | Minimum [Member]    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life 6 years  
Referral Relationships [Member] | Maximum [Member]    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life 16 years  
Non-compete Agreements [Member]    
Finite Lived Intangible Assets [Line Items]    
Total $ 2,017 1,770
Accumulated amortization $ 3,136 $ 2,855
Non-compete Agreements [Member] | Minimum [Member]    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life 5 years  
Non-compete Agreements [Member] | Maximum [Member]    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life 6 years