Summarized Results of Operations for Discontinued Facilities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Discontinued Operations [Line Items]
Managed-only, Revenue	$ 2,906	$ 193	$ 8,659
Disposal Group, Including Discontinued Operation, Revenue, Total	2,906	193	8,659
Managed-only, Expenses	2,975	861	8,952
Depreciation and amortization, Expenses	101		374
Disposal Group, Including Discontinued Operation, Operating Expense, Total	3,076	861	9,326
OPERATING LOSS	(170)	(668)	(667)
Other income		91
LOSS FROM DISCONTINUED OPERATIONS BEFORE INCOME TAXES	(170)	(577)	(667)
Income tax benefit	63	215	252
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAXES	$ (107)	$ (362)	$ (415)

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Disposal Group Including Discontinued Operation Managed Only Revenue.

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Disposal Group Including Discontinued Operation Other Income.

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Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Amount of costs of goods sold attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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