Discontinued Operations and Assets Held for Sale (Summary of Income Statement Information of Operations) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Discontinued Operations And Disposal Groups [Abstract]
Revenue	$ 0	$ 41,355	$ 0	$ 142,160
Operating cost and expense:
Cost of educational services	0	28,940	0	98,605
Student services and administrative expense	6,836	17,781	28,107	47,860
Restructuring expense	0	199	0	625
Total operating cost and expense	6,836	46,920	28,107	147,090
Operating loss	(6,836)	(5,565)	(28,107)	(4,930)
Interest and dividend income	0	425	0	2,164
Interest expense	0	(807)	0	(2,770)
Net other expense	0	(382)	0	(606)
Loss from discontinued operations before income taxes	(6,836)	(5,947)	(28,107)	(5,536)
Benefit from income taxes	1,679	3,228	6,904	3,778
Net loss from discontinued operations	$ (5,157)	$ (2,719)	$ (21,203)	$ (1,758)