INTANGIBLE ASSETS (Schedule of Intangible Assets) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 87,700	$ 93,100	$ 48,400
Amortizable Intangible Assets, Accumulated Amortization	(17,362)	(20,128)	(14,787)
Indefinite-lived Intangible Assets, Gross Carrying Amount	224,986	225,017	206,553
Customer Relationships [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	68,900	69,300	42,900
Amortizable Intangible Assets, Accumulated Amortization	$ (15,865)	(14,448)	(10,756)
Amortizable Intangible Assets, Weighted Average Amortization Period	10 years
Curriculum/Software [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 11,600	16,600	5,000
Amortizable Intangible Assets, Accumulated Amortization	$ (644)	(5,193)	(3,750)
Amortizable Intangible Assets, Weighted Average Amortization Period	6 years
Course Delivery Technology
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 7,200	7,200
Amortizable Intangible Assets, Accumulated Amortization	$ (853)	(487)
Amortizable Intangible Assets, Weighted Average Amortization Period	5 years
Patented Technology [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount			500
Amortizable Intangible Assets, Accumulated Amortization			(281)
Trade Names [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	$ 95,746	95,777	77,313
Chamberlain Title IV Eligibility And Accreditations [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	1,200	1,200	1,200
AUC Title IV Eligibility And Accreditations [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	100,000	100,000	100,000
Ross Title IV Eligibility And Accreditations [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	14,100	14,100	14,100
Intellectual Property [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	$ 13,940	$ 13,940	$ 13,940