CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income Statement [Abstract]
Total net revenues	$ 460,470	$ 468,676	$ 1,376,105	$ 1,405,558
Costs and expenses:
Operating salaries and benefits	259,379	263,932	779,976	789,874
Self-insurance for workers' compensation and general and professional liability insurance	15,237	14,545	43,744	43,643
Operating administrative expenses	10,635	12,962	34,744	39,333
Other operating costs	97,619	93,705	289,614	276,999
Center rent expense	36,647	35,952	109,546	107,394
General and administrative expenses	14,447	14,825	46,537	45,156
Depreciation and amortization	8,654	8,163	25,588	23,241
Provision for losses on accounts receivable	5,250	4,604	15,157	14,198
Interest, net of interest income of $94, $103, $229, and $243, respectively	4,458	4,834	13,297	14,688
Transaction costs	1,034	0	2,871	0
Loss on sale of assets, net	189	809	189	809
Restructuring costs	0	2,426	0	2,728
Loss on asset impairment	0	317,091	0	317,091
Total costs and expenses	453,549	773,848	1,361,263	1,675,154
Income (loss) before income taxes and discontinued operations	6,921	(305,172)	14,842	(269,596)
Income tax expense	2,932	2,203	6,021	16,715
Income from continuing operations	3,989	(307,375)	8,821	(286,311)
Discontinued operations:
Loss from discontinued operations, net	(2,702)	(2,031)	(8,301)	(5,036)
Net income (loss)	1,287	(309,406)	520	(291,347)
Loss from cash flow hedge, net of related tax benefit of $24, $357, $124, and $769, respectively	(36)	(535)	(263)	(1,153)
Other comprehensive loss, net of tax	(36)	(535)	(263)	(1,153)
Comprehensive income (loss)	$ 1,251	$ (309,941)	$ 257	$ (292,500)
Basic earnings per common and common equivalent share:
Income (loss) from continuing operations	$ 0.15	$ (11.73)	$ 0.33	$ (11.00)
Loss from discontinued operations, net	$ (0.10)	$ (0.08)	$ (0.31)	$ (0.19)
Net income (loss)	$ 0.05	$ (11.81)	$ 0.02	$ (11.19)
Diluted earnings per common and common equivalent share:
Income (loss) from continuing operations	$ 0.15	$ (11.73)	$ 0.33	$ (11.00)
Loss from discontinued operations, net	$ (0.10)	$ (0.08)	$ (0.31)	$ (0.19)
Net income (loss)	$ 0.05	$ (11.81)	$ 0.02	$ (11.19)
Weighted average number of common and common equivalent shares outstanding:
Basic	27,082	26,203	26,732	26,038
Diluted	27,082	26,203	26,732	26,038