Discontinued Operations and Assets Held for Sale (Summary of Income Statement Information of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Discontinued Operations And Disposal Groups [Abstract]
Revenue	$ 0	$ 53,082	$ 0	$ 112,339
Operating cost and expense:
Cost of educational services	0	8,914	0	19,974
Student services and administrative expense	(524)	39,060	2,914	93,307
Restructuring expense	0	949	0	949
Total operating cost and expense	(524)	48,923	2,914	114,230
Income (loss) from discontinued operations before income taxes	524	4,159	(2,914)	(1,891)
Gain (loss) on disposal of discontinued operations before income taxes	185	0	(3,174)	0
(Provision for) benefit from income taxes	(182)	(25,340)	2,961	(112)
Income (loss) from discontinued operations	$ 527	$ (21,181)	$ (3,127)	$ (2,003)