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Discontinued Operations - Assets and Liabilities of Discontinued Operations on Consolidated Balance Sheets (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Disposal Group Including Discontinued Operation Balance Sheet Disclosures [Abstract]    
Cash and cash equivalents $ 0 $ 63
Receivables, net 232 571
Other current assets 50 247
Deferred income tax assets, net 3,447 3,447
Assets held for sale 250,368 149,347
Total current assets 254,097 153,675
Property and equipment, net 5 276
Deferred income tax assets 17,446 17,446
Other assets, net 1,263 1,604
Assets held for sale   83,667
Total assets of discontinued operations 272,811 256,668
Accounts payable 239 32
Accrued expenses 143 710
Deferred tuition revenue   142
Remaining lease obligations 12,575 9,174
Liabilities held for sale 83,018 65,962
Total current liabilities 95,975 76,020
Remaining lease obligations 22,354 33,103
Other 201 223
Liabilities held for sale   2,152
Total liabilities of discontinued operations $ 118,530 $ 111,498