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Significant Payors (Narrative) (Details) - Illinois [Member]
3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Revenues [Member] | Illinois Department On Aging [Member]      
Concentration Risk [Line Items]      
Concentration risk, percentage 21.50% 20.70%  
Revenues [Member] | Geographic Concentration Risk [Member]      
Concentration Risk [Line Items]      
Concentration risk, percentage 39.10% 37.40%  
Accounts Receivable [Member] | Illinois Department On Aging [Member]      
Concentration Risk [Line Items]      
Concentration risk, percentage 20.70%   18.00%