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Debt - Interest Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Line of Credit Facility [Line Items]    
Accretion Related To Earnouts   $ 0
Amortization of deferred financing costs $ 248 117
Interest Expense 3,445 753
Provider Earnout    
Line of Credit Facility [Line Items]    
Accretion Related To Earnouts 100  
Major Earnout    
Line of Credit Facility [Line Items]    
Accretion Related To Earnouts 1,100  
Convertible Subordinated Notes    
Line of Credit Facility [Line Items]    
Interest incurred on convertible subordinated notes to affiliate 1,052 126
Amortization of discount 1,000 100
Working Capital Facility    
Line of Credit Facility [Line Items]    
Letters of credit fees and commitment fees 226 192
Working Capital Facility | Senior Credit Facility    
Line of Credit Facility [Line Items]    
Interest incurred on Senior Credit Facility $ 694 $ 318