Revenue Recognition - Changes in Deferred Revenue Balances (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Deferred Revenue Arrangement [Line Items]
Gross deferred revenue, beginning balance		$ 61,291	$ 63,970
Revenue earned from prior balances		(50,423)	(52,747)
Billings during period	[1]	293,487	222,654
Revenue earned for new billings during the period		(161,425)	(114,251)
Other adjustments		(1,439)	(687)
Gross deferred revenue, ending balance		141,491	118,939
University Group [Member] | CTU [Member]
Deferred Revenue Arrangement [Line Items]
Gross deferred revenue, beginning balance		40,082	42,531
Revenue earned from prior balances		(32,869)	(35,052)
Billings during period	[1]	178,628	152,877
Revenue earned for new billings during the period		(85,968)	(77,728)
Other adjustments		(1,032)	(308)
Gross deferred revenue, ending balance		98,841	82,320
University Group [Member] | AIUS [Member]
Deferred Revenue Arrangement [Line Items]
Gross deferred revenue, beginning balance		19,641	21,439
Revenue earned from prior balances		(16,691)	(17,695)
Billings during period	[1]	62,472	69,777
Revenue earned for new billings during the period		(37,139)	(36,523)
Other adjustments		65	(379)
Gross deferred revenue, ending balance		28,348	$ 36,619
University Group [Member] | USAHS [Member]
Deferred Revenue Arrangement [Line Items]
Gross deferred revenue, beginning balance	[2]	1,568
Revenue earned from prior balances	[2]	(863)
Billings during period	[1],[2]	52,387
Revenue earned for new billings during the period	[2]	(38,318)
Other adjustments	[2]	(472)
Gross deferred revenue, ending balance	[2]	$ 14,302

[1] Billings during period includes adjustments for prior billings.

[2] USAHS includes deferred revenue starting from the acquisition date on December 2, 2024.