The Company and Basis of Presentation - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013 Location Facility Attendant State
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of students in degree programs	61,000
Number of states where online programs are offered	48
Number of locations	149
Number of campuses	147
Number of learning sites	2
Number of states	39
Number of training facility	1