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Intangible Assets, net (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]    
Total $ 52,588 $ 48,828
Tradenames [Member]    
Finite-Lived Intangible Assets, Net [Abstract]    
Total 32,049 30,256
Referral Relationships [Member]    
Finite-Lived Intangible Assets, Net [Abstract]    
Total 18,367 16,895
Accumulated amortization $ 11,677 9,370
Referral Relationships [Member] | Minimum [Member]    
Finite-Lived Intangible Assets, Net [Abstract]    
Estimated useful life 6 years  
Referral Relationships [Member] | Maximum [Member]    
Finite-Lived Intangible Assets, Net [Abstract]    
Estimated useful life 16 years  
Non-compete Agreements [Member]    
Finite-Lived Intangible Assets, Net [Abstract]    
Total $ 2,172 1,677
Accumulated amortization $ 5,424 $ 4,716
Non-compete Agreements [Member] | Minimum [Member]    
Finite-Lived Intangible Assets, Net [Abstract]    
Estimated useful life 5 years  
Non-compete Agreements [Member] | Maximum [Member]    
Finite-Lived Intangible Assets, Net [Abstract]    
Estimated useful life 6 years