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REVENUE AND ACCOUNTS RECEIVABLE - NARRATIVE (Details)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]      
Payment terms Residency agreements are generally for a term of 30 days, with resident fees billed monthly in advance. For residents under reimbursement arrangements with Medicaid, revenue is recorded based on contractually agreed-upon amounts or rates on a per resident, daily basis or as services are rendered.    
Customer concentration risk | Revenue      
Disaggregation of Revenue [Line Items]      
Revenue % 100.00% 100.00% 100.00%
Customer concentration risk | Revenue | Medicare And Medicaid      
Disaggregation of Revenue [Line Items]      
Revenue % 62.30% 62.60% 60.10%
Customer concentration risk | Receivables | Medicare And Medicaid      
Disaggregation of Revenue [Line Items]      
Revenue % 77.80% 78.60%