SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Patient Accounts Receivable Narrative (Details) - day	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Percentage of patient receivables outstanding	10.00%
Historical collection rate from Medicare	99.00%
Portion of accounts receivable derived from Medicare	58.00%	56.00%
Rate of request for anticipated payment submitted for the initial episode of care	60.00%
Rate of request for anticipated payment submitted for subsequent episodes of care	50.00%
Maximum days to submit final bill from the start of episode	120
Maximum days to submit final bill from the date the request for anticipated payment was paid	60
Home Health [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Historical collection rate from Medicare	99.00%
Accounts Receivable | Single Payor | Customer Concentration Risk
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Percent of net services revenue provided by Medicare	10.40%