Other Current and Long-Term Liabilities - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Interest payable	$ 20,755	$ 20,537
Amounts due to patients and payors	20,053	18,096
Amounts due to patients and payors	42,342	0
Accrued expenses and other	72,093	71,311
Total	$ 155,243	$ 109,944