Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]	0001299704 (http://www.sec.gov/CIK)
Statement, Scenario [Axis]	Scenario, Unspecified [Domain]

Statement	Period [Axis]
	2011-01-01 - 2011-12-31	2010-01-01 - 2010-12-31	2009-01-01 - 2009-12-31
Total revenues	625,856,000	600,233,000	647,676,000
Center Expenses:
Salaries and related payroll costs	182,465,000	179,617,000	185,599,000
Provision for doubtful accounts	107,911,000	104,228,000	124,575,000
Occupancy costs	82,790,000	87,457,000	94,370,000
Center depreciation expense	8,147,000	9,806,000	13,174,000
Advertising expense	21,371,000	20,898,000	22,232,000
Other center expenses	41,964,000	43,124,000	45,606,000
Total center expenses	444,648,000	445,130,000	485,556,000
Center gross profit	181,208,000	155,103,000	162,120,000
Corporate and Other Expenses (Income):
General and administrative expenses	61,108,000	61,892,000	55,363,000
General and administrative expenses with related parties	209,000	635,000	1,163,000
Legal settlements	23,000	18,608,000	6,427,000
Corporate depreciation and amortization expense	2,999,000	2,306,000	2,714,000
Interest expense	4,561,000	4,858,000	6,241,000
Interest income	(43,000)	(74,000)	(238,000)
(Gain)/loss on disposal of property and equipment	159,000	413,000	(50,000)
Loss on impairment of assets	6,852,000	654,000	2,987,000
Income before income taxes	105,340,000	65,811,000	87,513,000
Income tax expense	37,717,000	30,048,000	33,310,000
Net income	67,623,000	35,763,000	54,203,000
Net income per common share:
Basic (in dollars per share)	1.10	.59	.89
Diluted (in dollars per share)	1.09	.58	.88
Dividends declared per common share (in dollars per share)	.25	.25	.25
Weighted average number of shares outstanding:
Basic (in shares)	61,457,000	61,054,000	60,868,000
Diluted (in shares)	61,875,000	61,440,000	61,667,000