Schedule of Net Revenues and Operating Results (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Discontinued Operation, Additional Disclosures [Abstract]
Net revenues	$ 7,300,000	$ 11,300,000	$ 25,900,000	$ 34,400,000
(Loss) before income taxes	(1,200,000)	(700,000)	(3,400,000)	(4,200,000)
Income tax benefit	500,000	300,000	1,400,000	1,700,000
Discontinued operations, net of tax	(686,000)	(442,000)	(2,036,000)	(2,460,000)
Income Statement Disclosures For Care Centers Removed From Available For Sale [Line Items]
Net revenues	2,800,000	3,600,000	9,200,000	10,900,000
Income before income taxes	0	400,000	600,000	1,400,000
Income tax expense	0	(100,000)	(200,000)	(500,000)
Income from continuing operations	$ 0	$ 300,000	$ 400,000	$ 900,000