Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) - USD ($)
1 Months Ended 9 Months Ended
Aug. 31, 2017
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Business Acquisition, Contingent Consideration        
Contingent consideration   $ 40,300,000   $ 45,100,000
Membership interest contingent on successful bid   15.00%    
Credit line capacity   $ 196,809,000    
Purchase obligation   106,600,000    
Accrued Liabilities        
Business Acquisition, Contingent Consideration        
Contingent consideration   2,000,000   300,000
Other Noncurrent Liabilities        
Business Acquisition, Contingent Consideration        
Contingent consideration   38,300,000   $ 44,800,000
BioReference        
Business Acquisition, Contingent Consideration        
Severance costs   $ 3,700,000 $ 17,900,000  
Line of Credit | Veterans Accountable Care Group LLC        
Business Acquisition, Contingent Consideration        
Credit line capacity $ 50,000,000.0      
Line of credit maturity term 5 years      
Interest rate on credit facility 6.50%