INTANGIBLE ASSETS - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended			12 Months Ended
	May 31, 2016	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Intangible Assets [Line Items]
Amortization of Intangible Assets		$ 2,432		$ 1,378	$ 5,695		$ 2,550
Indefinite-lived Intangible Assets, Period Increase (Decrease)					37,600
Goodwill		854,838	$ 588,007	542,994	854,838	$ 588,007	542,994
Intangible Assets, Net (Excluding Goodwill), Total		$ 421,528	342,856	357,901	$ 421,528	342,856	357,901
Percentage Of Intangible Assets Including Goodwill		55.00%			55.00%
Goodwill, Acquired During Period					$ 274,620	11,394	104,613	$ 55,915
Devry University [Member]
Intangible Assets [Line Items]
Fair Value In Excess Of Carrying Value Percentage	6.00%
Goodwill		$ 22,196	22,196	22,196	$ 22,196	22,196	22,196
Percentage of Decline In Revenue					23.90%
Potential Impairment Of Goodwill And Intangible Assets					$ 23,800
Percentage Of Cost Savings On Revenue Decline	90.00%
Carrington [Member]
Intangible Assets [Line Items]
Goodwill		0	0	$ 5,811	0	$ 0	$ 5,811
Potential Impairment Of Intangible Assets		$ 20,200			20,200
Carrington [Member] | Title Four Eligibility And Accreditations [Member]
Intangible Assets [Line Items]
Goodwill and Intangible Asset Impairment, Total			$ 48,200
Association Of Certified Anti-Money Laundering Specialists [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired					39,900
Goodwill, Acquired During Period					$ 274,600