SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Detail 8) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Concentrations
Concentrations amount, gross	83,774us-gaap_AccountsReceivableGrossCurrent	75,488us-gaap_AccountsReceivableGrossCurrent
Allowances	(8,880)	(15,586)
Accounts Receivable, Net, Current, Total	74,894us-gaap_AccountsReceivableNetCurrent	59,902us-gaap_AccountsReceivableNetCurrent
Revenue \| Revenue concentration
Concentrations
Concentrations (as a percent)	100.00%	100.00%	100.00%
Revenue \| Revenue concentration \| Medicare program
Concentrations
Concentrations (as a percent)	72.40%	71.20%	71.70%
Revenue \| Revenue concentration \| Medicaid and other government programs
Concentrations
Concentrations (as a percent)	19.60%	22.50%	22.00%
Revenue \| Revenue concentration \| Medicaid and other government programs \| OHIO
Concentrations
Concentrations (as a percent)	8.80%	11.70%	11.90%
Revenue \| Revenue concentration \| Medicaid and other government programs \| Connecticut
Concentrations
Concentrations (as a percent)	5.50%	7.10%	6.60%
Revenue \| Revenue concentration \| Medicaid and other government programs \| Kentucky
Concentrations
Concentrations (as a percent)	1.80%	2.30%	2.70%
Revenue \| Revenue concentration \| Medicaid and other government programs \| Tennessee
Concentrations
Concentrations (as a percent)	2.50%	0.20%	0.00%
Revenue \| Revenue concentration \| Medicaid and other government programs \| Florida
Concentrations
Concentrations (as a percent)	0.60%	0.70%	0.50%
Revenue \| Revenue concentration \| Medicaid and other government programs \| Others
Concentrations
Concentrations (as a percent)	0.40%	0.50%	0.30%
Revenue \| Revenue concentration \| All other payors
Concentrations
Concentrations (as a percent)	8.00%	6.30%	6.30%
Accounts receivable \| Receivable concentration
Concentrations
Concentrations (as a percent)	100.00%	100.00%
Accounts receivable \| Receivable concentration \| Medicare program
Concentrations
Concentrations (as a percent)	55.70%	56.70%
Concentrations amount, gross	46,634	42,823
Accounts receivable \| Receivable concentration \| Medicaid and other government programs
Concentrations
Concentrations (as a percent)	30.30%	25.70%
Concentrations amount, gross	25,359	19,412
Accounts receivable \| Receivable concentration \| Medicaid and other government programs \| OHIO
Concentrations
Concentrations (as a percent)	11.00%	7.80%
Concentrations amount, gross	9,239	5,925
Accounts receivable \| Receivable concentration \| Medicaid and other government programs \| Connecticut
Concentrations
Concentrations (as a percent)	4.80%	6.50%
Concentrations amount, gross	3,982	4,884
Accounts receivable \| Receivable concentration \| Medicaid and other government programs \| Kentucky
Concentrations
Concentrations (as a percent)	4.40%	3.40%
Concentrations amount, gross	3,686	2,536
Accounts receivable \| Receivable concentration \| Medicaid and other government programs \| Tennessee
Concentrations
Concentrations (as a percent)	6.70%	5.40%
Concentrations amount, gross	5,617	4,099
Accounts receivable \| Receivable concentration \| Medicaid and other government programs \| Others
Concentrations
Concentrations (as a percent)	3.40%	2.60%
Concentrations amount, gross	2,835	1,968
Accounts receivable \| Receivable concentration \| All other payors
Concentrations
Concentrations (as a percent)	14.10%	17.60%
Concentrations amount, gross	11,781	13,253

Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 3

-Subparagraph a, b

-Article 5

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3-4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

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