EQUITY METHOD INVESTMENT - Narrative (Details) - primaryCareCenter	12 Months Ended
	Dec. 31, 2021	Sep. 30, 2018
Schedule of Equity Method Investments [Line Items]
Number of primary care centers in strategic partnership	31
Number of additional primary care centers expected to be opened in strategic partnership	36
WCAS
Schedule of Equity Method Investments [Line Items]
Time frame for put and call option activity per partnership agreement, minimum	4 years
Time frame for put and call option activity per partnership agreement, maximum	9 years
Kindred at Home
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership (percent)		40.00%