1. NATURE OF BUSINESS AND BASIS OF PRESENTATION (Details - Revenue breakdown) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Commercial Insurance	$ 109,472	$ 103,934	$ 314,300	$ 310,147
Medicare	41,203	38,276	118,627	113,916
Medicaid	6,248	5,869	18,214	18,358
Workers' Compensation/Personal Injury	7,821	8,566	22,708	27,666
Other	6,354	8,727	24,688	26,337
Service fee revenue, net of contractual allowances and discounts	171,098	165,373	498,536	496,424
Provision for bad debts	(7,532)	(7,033)	(21,945)	(20,810)
Net service fee revenue	163,566	158,340	476,591	475,614
Revenue under capitation arrangements	20,493	16,848	55,426	49,034
Total net revenue	$ 184,059	$ 175,188	$ 532,017	$ 524,648