DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS - Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other current assets:
Payroll tax escrow	$ 7,200	$ 6,700
Income tax receivable	3,400	1,300
Due from joint ventures	2,000	1,700
Other	3,700	1,600
Other current assets	16,268	11,260
Other assets:
Workers’ compensation deposits	400	400
Health insurance deposits	500	500
Other miscellaneous deposits	900	900
Indemnity receivable	17,000	4,900
Investments	26,400	27,800
Other	3,900	4,000
Other assets	49,130	38,468
Accrued expenses:
Health insurance	14,100	10,600
Workers’ compensation	29,300	26,800
Florida ZPIC audit, gross liability	17,400	0
Legal and other settlements	6,400	5,700
Lease liability	900	400
Charity care	1,500	1,400
Estimated Medicare cap liability	900	800
Hospice cost of revenue	9,100	7,200
Patient liability	5,300	4,300
Other	4,200	6,100
Accrued expenses	89,104	63,290
Other long-term obligations:
Reserve for uncertain tax positions	0	300
Deferred compensation plan liability	1,900	1,800
Other	1,900	1,600
Other long-term obligations	$ 3,791	$ 3,730