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Intangible and Other Non-Current Assets Intangible and Other Non-Current Assets (Details) - USD ($)
 3 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Deferred Costs and Other Noncurrent Assets [Abstract]        
Loan issuance and origination costs, net of accumulated amortization   $ 1,270,000 $ 1,445,000  
Tradenames   11,663,000 8,856,000  
Other   50,000 210,000  
Intangible and other non-current assets   14,957,000 10,978,000  
Convertible subordinated notes        
Deferred Costs and Other Noncurrent Assets [Abstract]        
Loan issuance and origination costs, net of accumulated amortization   $ 2,268,000 2,769,000  
Debt instrument, term   7 years    
Noncompete Agreements        
Deferred Costs and Other Noncurrent Assets [Abstract]        
Prepaid agreements not to compete, net of accumulated amortization of $5,404 and $5,501, respectively   $ 3,244,000 1,912,000  
Accumulated amortization of prepaid agreements to not compete   3,244,000 5,404,000  
Amortization of intangible assets   $ 435,000 $ 300,000 $ 349,000
Noncompete Agreements | Minimum        
Deferred Costs and Other Noncurrent Assets [Abstract]        
Term of agreements not to compete   1 year    
Noncompete Agreements | Maximum        
Deferred Costs and Other Noncurrent Assets [Abstract]        
Term of agreements not to compete   10 years    
Noncompete Agreements        
Deferred Costs and Other Noncurrent Assets [Abstract]        
Increase (Decrease) in Deferred Charges   $ 1,600,000    
Trade Names        
Deferred Costs and Other Noncurrent Assets [Abstract]        
Tradenames acquired   $ 3,000,000    
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) $ 145,000