COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ in Thousands						1 Months Ended	3 Months Ended	12 Months Ended	27 Months Ended
	Jun. 27, 2016 patient	Jan. 18, 2016 USD ($) claim	Nov. 03, 2015 patient	May 21, 2015 patient	Jun. 06, 2011 beneficiary	Aug. 31, 2017 USD ($) claim	Mar. 31, 2021 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2010 beneficiary	Dec. 31, 2020 USD ($)	Jan. 10, 2019 USD ($)
Loss Contingencies [Line Items]
Patient accounts receivable							$ 275,632			$ 255,145
Health insurance retention limit							1,300
Workers compensation insurance retention limit							1,000
Professional liability insurance retention limit							300
South Carolina | Hospice [Member]
Loss Contingencies [Line Items]
Number of beneficiaries | beneficiary									30
Indemnity receivable							2,800
Indemnification amount											$ 2,800
South Carolina | Hospice [Member] | Extrapolated [Member]
Loss Contingencies [Line Items]
Number of beneficiaries | beneficiary					16
South Carolina | Hospice [Member] | Unfavorable [Member]
Loss Contingencies [Line Items]
Recovery amount of overpayment made to subsidiary		$ 3,700
Recovery amount of overpayment made to subsidiary including interest		$ 5,600
Number of claims submitted by subsidiary | claim		9
Recovery amount of over payment made to subsidiary including interest withheld							5,700
US Department of Justice | Hospice [Member]
Loss Contingencies [Line Items]
Loss contingency accrual							6,500
US Department of Justice | Massachusetts | Hospice [Member]
Loss Contingencies [Line Items]
Number of patients | patient				53
US Department of Justice | Morgantown, West Virginia | Hospice [Member]
Loss Contingencies [Line Items]
Number of patients | patient			66
US Department of Justice | Parkersburg, West Virginia | Hospice [Member]
Loss Contingencies [Line Items]
Number of patients | patient	68
Safeguard Zone Program Integrity Contractor | Florida
Loss Contingencies [Line Items]
Loss contingency accrual							17,400
Indemnity receivable							10,900
Indemnification amount						$ 12,600
Safeguard Zone Program Integrity Contractor | Florida | Infinity HomeCare
Loss Contingencies [Line Items]
Indemnification amount						12,600
Safeguard Zone Program Integrity Contractor | Florida | Home Health [Member]
Loss Contingencies [Line Items]
Florida ZPIC revenue reduction								$ 6,500
Safeguard Zone Program Integrity Contractor | Florida | Home Health [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Recovery amount of overpayment made to subsidiary						6,500
Safeguard Zone Program Integrity Contractor | Florida | Home Health [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Recovery amount of overpayment made to subsidiary						38,800	29,300
Safeguard Zone Program Integrity Contractor | Florida | Home Health [Member] | Infinity HomeCare
Loss Contingencies [Line Items]
Patient accounts receivable							1,500
Safeguard Zone Program Integrity Contractor | Lakeland, Florida | Home Health [Member]
Loss Contingencies [Line Items]
Recovery amount of overpayment made to subsidiary						$ 34,000	26,000
Number of claims submitted by subsidiary | claim						72
Actual claims payment						$ 200
Error rate (percent)						100.00%
Safeguard Zone Program Integrity Contractor | Clearwater, Florida | Home Health [Member]
Loss Contingencies [Line Items]
Recovery amount of overpayment made to subsidiary						$ 4,800	$ 3,300
Number of claims submitted by subsidiary | claim						70
Actual claims payment						$ 200
Error rate (percent)						100.00%