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Nature of Business - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015 Degrees Colleges
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of area of the company's campus in Phoenix, Arizona	200+ acre campus
Number of colleges in Phoenix, Arizona | Colleges	8
Number of degree programs offered in Phoenix, Arizona and online	160

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Number of colleges.

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Number of degree programs offered.

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Real estate property description.

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