CONSOLIDATED INCOME STATEMENTS (unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
CONSOLIDATED INCOME STATEMENTS (unaudited) [Abstract]
Total net revenues	$ 487,674	$ 471,908	$ 971,571	$ 942,323
Costs and expenses:
Operating salaries and benefits	272,923	266,015	545,025	531,104
Self-insurance for workers' compensation and general and professional liability insurance	15,267	14,461	30,529	28,901
Operating administrative expenses	13,476	13,301	26,756	25,589
Other operating costs	98,986	95,094	197,577	191,746
Center rent expense	37,014	18,805	73,926	37,352
General and administrative expenses	14,952	15,157	30,331	30,424
Depreciation and amortization	7,762	12,462	15,341	24,810
Provision for losses on accounts receivable	4,709	4,916	10,044	10,712
Interest, net of interest income of $82, $73, $141 and $163 respectively	4,855	11,689	9,854	23,578
Transaction costs	0	2,248	0	2,248
Integration costs	167	0	303	0
Total costs and expenses	470,111	454,148	939,686	906,464
Income before income taxes and discontinued operations	17,563	17,760	31,885	35,859
Income tax expense	7,201	7,135	13,073	14,431
Income from continuing operations	10,362	10,625	18,812	21,428
Loss from discontinued operations, net of related taxes	(416)	(652)	(754)	(1,257)
Net income	$ 9,946	$ 9,973	$ 18,058	$ 20,171
Basic earnings per common and common equivalent share:
Income from continuing operations	$ 0.40	$ 0.72	$ 0.73	$ 1.46
Loss from discontinued operations, net	$ (0.02)	$ (0.04)	$ (0.03)	$ (0.09)
Net income	$ 0.38	$ 0.68	$ 0.70	$ 1.37
Diluted earnings per common and common equivalent share:
Income from continuing operations	$ 0.40	$ 0.71	$ 0.72	$ 1.45
Loss from discontinued operations, net	$ (0.02)	$ (0.04)	$ (0.02)	$ (0.09)
Net income	$ 0.38	$ 0.67	$ 0.70	$ 1.36
Weighted average number of common and common equivalent shares outstanding:
Basic	26,146	14,744	25,899	14,706
Diluted	26,187	14,863	25,967	14,821