Significant Accounting Policies - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Other Liabilities, Current [Abstract]
Interest payable	$ 5,410	$ 7,027
Current taxes payable	1,977	3,189
Insurance liabilities	5,476	5,552
Third-party settlements	5,222	11,708
Acquisition consideration payable	16,768	0
Amounts due to patients and payors	11,424	9,476
Other accrued expenses	22,133	16,918
Total	$ 68,410	$ 53,870