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Significant Payors (Narrative) (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenues [Member] | Illinois Department On Aging [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	22.60%	23.20%	21.50%	23.20%
Revenues [Member] | Geographic Concentration Risk [Member] | Illinois [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	38.90%	37.40%	37.40%	37.50%
Accounts Receivable [Member] | Illinois Department On Aging [Member]
Concentration Risk [Line Items]
Concentration risk, percentage			16.70%		15.90%

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