XML 43 R36.htm IDEA: XBRL DOCUMENT v2.4.0.8
Student Receivables - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Receivables [Abstract]    
Student receivables write-off period, days past due Greater than 90 days  
Student receivables, net of allowance for doubtful accounts and net of deferred tuition revenue $ 4.8 $ 5.2