Discontinued Operations - Assets and Liabilities of Discontinued Operations on Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Business Combinations [Abstract]
Cash and cash equivalents	$ 15	$ 63
Receivables, net	251	476
Other current assets		115
Deferred income tax assets	3,450	3,450
Total current assets	3,716	4,104
Property and equipment, net	1	162
Deferred income tax assets	17,253	17,253
Other assets, net	1,389	1,553
Total assets of discontinued operations	22,359	23,072
Accounts payable	17	29
Accrued expenses	323	665
Deferred tuition revenue		20
Remaining lease obligations	11,966	9,174
Total current liabilities	12,306	9,888
Remaining lease obligations	27,982	33,103
Other	196	96
Total liabilities of discontinued operations	$ 40,484	$ 43,087

For the disposal group, including a component of the entity (discontinued operation), the current portion of the aggregate tax effects as of the balance sheet date of all future tax deductions arising from temporary differences between tax basis and generally accepted accounting principles basis recognition of assets, liabilities, revenues and expenses, which can only be deducted for tax purposes when permitted under enacted tax laws; after deducting the allocated valuation allowance, if any, to reduce such amount to net realizable value. Deferred tax liabilities and assets shall be classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, shall be classified according to the expected reversal date of the temporary difference. An unrecognized tax benefit that is directly related to a position taken in a tax year that results in a net operating loss carryforward should be presented as a reduction of the related deferred tax asset.

No definition available.