SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition by Payor Class (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue by payor class as a percentage of total net service revenue	100.00%	100.00%	100.00%
Home Health Medicare [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue by payor class as a percentage of total net service revenue	50.00%	53.00%	58.00%
Home Health Non-Medicare - Episodic Based [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue by payor class as a percentage of total net service revenue	9.00%	8.00%	6.00%
Home Health Non-Medicare - Non-Episodic Based [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue by payor class as a percentage of total net service revenue	12.00%	11.00%	11.00%
Hospice Medicare [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue by payor class as a percentage of total net service revenue	23.00%	23.00%	21.00%
Hospice Non-Medicare [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue by payor class as a percentage of total net service revenue	1.00%	1.00%	1.00%
Personal Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue by payor class as a percentage of total net service revenue	5.00%	4.00%	3.00%