Commitments and Contingencies - Insurance (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Specialty Pharmaceutical Management
Insurance
Period for which insurance policies have been renewed	1 year
General liability
Insurance
Period for which insurance policies have been renewed	1 year
Per claim un-aggregated self-insured retention	$ 50
General liability | Specialty Pharmaceutical Management
Insurance
Per claim self-insured retention	50
Aggregated self-insured retention	$ 250
Professional liability
Insurance
Period for which insurance policies have been renewed	1 year
Per claim un-aggregated self-insured retention	$ 50
Professional liability | Specialty Pharmaceutical Management
Insurance
Per claim self-insured retention	50
Aggregated self-insured retention	$ 250
Managed care liability
Insurance
Period for which insurance policies have been renewed	1 year
Per claim un-aggregated self-insured retention	$ 1,000
Per class action claim un-aggregated self-insured retention	$ 10,000