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1. NATURE OF BUSINESS AND BASIS OF PRESENTATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Commercial Insurance/Managed Care Capitation	$ 104,614	$ 106,558
Medicare	33,666	35,713
Medicaid	5,163	5,777
Workers Compensation/Personal Injury	7,453	7,316
Other	7,867	8,377
Service fee revenue, net of contractual allowances and discounts	158,763	163,741
Provision for bad debts	(6,893)	(6,822)
Net service fee revenue	151,870	156,919
Revenue under capitation arrangements	17,006	16,021
Total net revenue	$ 168,876	$ 172,940

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