SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) visit	Dec. 31, 2017 USD ($)	Dec. 31, 2016
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Percent of net services revenue provided by Medicare	73.00%
Episode of care as episodic-based revenue, days	60 days
Net service revenue episode payment rate	60 days
Percentage of total reimbursement of outlier payment	10.00%
Low utilization payment adjustment, maximum number of visits	4
First threshold of therapy services required (visits)	6
Second threshold of therapy services required (visits)	14
Third threshold of therapy services required (visits)	20
Historical collection rate from Medicare	99.00%
Hospice Medicare revenue rate accounted for routine care	97.00%	97.00%	97.00%
Home Health [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Historical collection rate from Medicare	99.00%
Hospice [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Historical collection rate from Medicare	99.00%
Minimum [Member] | Home Health [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Non-medicare revenue term rates	90.00%
Maximum [Member] | Home Health [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Non-medicare revenue term rates	100.00%
Cap Year 2013 Through 2019 [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Estimated amounts due back to Medicare | $	$ 1.7
Cap Year 2013 Through 2018 [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Estimated amounts due back to Medicare | $		$ 0.9