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Discontinued Operations - Summary Results of Operations for Discontinued Operations (Parenthetical) (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Discontinued Operations And Disposal Groups [Abstract]        
Benefit from income taxes [1],[2] $ 0 $ 0 $ 0 $ 0
[1] Due to the valuation allowance against our net deferred taxes, there is no income tax benefit reported for the quarters and years to date ended September 30, 2015 and 2014.
[2] Includes the results of operations for our LCB campuses that are held for sale, which met the criteria to be considered discontinued operations under ASC Topic 360, in addition to our Transitional Group campuses that completed their teach-out prior to 2015.