Summarized Results of Operations for Discontinued Facilities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended														12 Months Ended
	Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Discontinued Operations [Line Items]
Managed-only, Revenue															$ 19,984	$ 36,421	$ 46,808
Discontinued operations - revenue			8,976		9,001		9,184		9,126		8,969		8,949		19,984	36,421	46,808
Managed-only, Expenses															22,529	35,994	45,131
Depreciation and amortization, Expenses															799	870	1,363
Asset impairments															2,637
Disposal Group, Including Discontinued Operation, Operating Expense, Total															25,965	36,864	46,494
OPERATING (LOSS) INCOME			4,359		560		(217)		(155)		240		(93)		(5,981)	(443)	314
Other (expense) income															(17)	96	1
(LOSS) INCOME BEFORE INCOME TAXES															(5,998)	(347)	315
Income tax benefit (expense)															2,241	142	(135)
(LOSS) INCOME FROM DISCONTINUED OPERATIONS, NET OF TAXES	$ (663)	[1]	$ (2,739)	[1]	$ (355)	[1]	$ 150	[1]	$ 99	[1]	$ (150)	[1]	$ (304)	[1]	$ (3,757)	$ (205)	$ 180

[1] The amounts presented for the first two quarters of 2013 and the four quarters of 2012 are not equal to the same amounts previously reported in the respective reports on Form 10-Q and Form 10-K for each period as a result of discontinued operations. Below is a reconciliation to the previously reported amounts in Form 10-Q.