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Regulatory - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 27, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Regulated Operations [Abstract]        
University paid $ 7,387      
Revenue from Title IV program funds   74.80% 76.50% 78.50%