Goodwill and Intangible Assets (Schedule of Intangible Assets) (Detail) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 87,200	$ 87,700	$ 87,700
Amortizable Intangible Assets, Accumulated Amortization	(29,627)	(25,090)	(19,938)
Indefinite-lived Intangible Assets, Gross Carrying Amount	224,945	224,904	224,974
Customer Relationships [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	68,900	68,900	68,900
Amortizable Intangible Assets, Accumulated Amortization	$ (24,444)	(21,044)	(17,591)
Amortizable Intangible Assets, Weighted Average Amortization Period	10 years
Curriculum/Software [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 11,600	11,600	11,600
Amortizable Intangible Assets, Accumulated Amortization	$ (3,061)	(2,094)	(1,128)
Amortizable Intangible Assets, Weighted Average Amortization Period	6 years
Course Delivery Technology
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 6,700	7,200	7,200
Amortizable Intangible Assets, Accumulated Amortization	$ (2,122)	(1,952)	(1,219)
Amortizable Intangible Assets, Weighted Average Amortization Period	5 years
Trade Names [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	$ 95,705	95,664	95,734
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