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1. NATURE OF BUSINESS AND BASIS OF PRESENTATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Nature Of Business And Basis Of Presentation
Commercial Insurance/Managed Care Capitation	$ 102,672	$ 93,967	$ 305,194	$ 286,615
Medicare	37,811	35,523	111,952	106,259
Medicaid	5,798	5,495	18,503	17,431
Workers Compensation/Personal Injury	8,462	7,242	28,234	22,860
Other	3,597	3,579	11,732	11,116
Service fee revenue, net of contractual allowances and discounts	158,340	145,807	475,614	444,280
Revenue under capitation arrangements	16,848	14,646	49,034	43,540
Total net revenue	$ 175,188	$ 160,453	$ 524,648	$ 487,820

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Commercial Insurance/Managed Care Capitation

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Medicare

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Revenue under capitation arrangements

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Amount of revenue recognized that is not otherwise disclosed.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-03.1(e))

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Amount of patient service revenue, net of contractual allowances and discounts, less the related provision for bad debts.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 954

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Amount of insurance premium revenue recognized.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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