Summarized Results of Operations for Discontinued Facilities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Discontinued Operations [Line Items]
Managed-only, Revenue									$ 193	$ 11,270	$ 34,620
Discontinued operations - revenue	2,611		2,906		2,859		2,894		193	11,270	34,620
Managed-only, Expenses									861	12,527	32,324
Depreciation and amortization, Expenses										715	2,563
Goodwill impairment, Expenses											1,684
Disposal Group, Including Discontinued Operation, Operating Expense, Total									861	13,242	36,571
OPERATING LOSS	1,305		170		319		178		(668)	(1,972)	(1,951)
Other income									91		60
LOSS FROM DISCONTINUED OPERATIONS BEFORE INCOME TAXES									(577)	(1,972)	(1,891)
Income tax benefit									215	716	721
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAXES	$ (841)	[1]	$ (107)	[1]	$ (198)	[1]	$ (110)	[1]	$ (362)	$ (1,256)	$ (1,170)

[1] The amounts presented for the four quarters of 2011 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.