For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Data Type:	num:percentItemType
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COMMITMENTS AND CONTINGENCIES (Details)	12 Months Ended
COMMITMENTS AND CONTINGENCIES (Details)	Dec. 31, 2019 USD ($) review	Dec. 31, 2018	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Number of operating subsidiaries with reviews scheduled \| review	8
General and professional liability, retention limit	$ 250,000
Workers' compensation, retention limit	$ 150,000
Revenue \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk, percent	100.00%	100.00%	100.00%
Medicare and medicaid \| Receivables \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk, percent	74.30%	72.40%
Medicare and medicaid \| Revenue \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk, percent	55.60%	53.10%	51.40%