CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income Statement [Abstract]
Total net revenues	$ 458,493	$ 466,307
Costs and expenses:
Operating salaries and benefits	261,090	262,480
Self-insurance for workers' compensation and general and professional liability insurance	15,317	14,557
Operating administrative expenses	12,406	13,067
Other operating costs	96,566	91,135
Center rent expense	36,377	35,692
General and administrative expenses	16,041	15,379
Depreciation and amortization	8,430	7,449
Provision for losses on accounts receivable	4,808	5,176
Interest, net of interest income of $68 and $58, respectively	4,411	4,999
Restructuring costs	0	136
Total costs and expenses	455,446	450,070
Income before income taxes and discontinued operations	3,047	16,237
Income tax expense	1,188	6,619
Income from continuing operations	1,859	9,618
Discontinued operations:
Loss from discontinued operations, net	(1,646)	(1,506)
Net income	213	8,112
(Loss) gain from cash flow hedge, net of related tax (benefit) expense of ($47) and $22, respectively	(71)	32
Other comprehensive income, net of tax	(71)	32
Comprehensive income	$ 142	$ 8,144
Basic earnings per common and common equivalent share:
Income from continuing operations	$ 0.07	$ 0.37
Loss from discontinued operations, net	$ (0.06)	$ (0.05)
Net income	$ 0.01	$ 0.32
Diluted earnings per common and common equivalent share:
Income from continuing operations	$ 0.07	$ 0.37
Loss from discontinued operations, net	$ (0.06)	$ (0.06)
Net income	$ 0.01	$ 0.31
Weighted average number of common and common equivalent shares outstanding:
Basic	26,207	25,740
Diluted	26,207	25,838