Revenue Recognition - Changes in Deferred Revenue Balances (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024
Deferred Revenue Arrangement [Line Items]
Gross deferred revenue, beginning balance		$ 61,291	$ 63,970
Business acquisitions, beginning balance			10,137
Revenue earned from prior balances		(55,868)	(70,484)
Billings during period	[1]	860,766	662,774
Revenue earned for new billings during the period		(785,534)	(605,587)
Other adjustments		(365)	481
Gross deferred revenue, ending balance		80,290	61,291
University Group [Member] | CTU [Member]
Deferred Revenue Arrangement [Line Items]
Gross deferred revenue, beginning balance	[2]	33,168	36,409
Revenue earned from prior balances	[2]	(29,814)	(33,472)
Billings during period	[1],[2]	463,059	437,961
Revenue earned for new billings during the period	[2]	(428,831)	(406,711)
Other adjustments	[2]	(162)	(1,019)
Gross deferred revenue, ending balance	[2]	37,420	33,168
University Group [Member] | AIUS [Member]
Deferred Revenue Arrangement [Line Items]
Gross deferred revenue, beginning balance	[2]	26,555	27,561
Revenue earned from prior balances	[2]	(25,599)	(26,976)
Billings during period	[2]	240,197	224,813	[1]
Revenue earned for new billings during the period	[2]	(199,589)	(198,876)
Other adjustments	[2]	(91)	33
Gross deferred revenue, ending balance	[2]	41,473	26,555
University Group [Member] | USAHS [Member]
Deferred Revenue Arrangement [Line Items]
Gross deferred revenue, beginning balance	[3]	1,568
Business acquisitions, beginning balance	[3]		10,137
Revenue earned from prior balances	[3]	(455)	(10,036)
Billings during period	[3]	157,510
Revenue earned for new billings during the period	[3]	(157,114)
Other adjustments	[3]	(112)	1,467
Gross deferred revenue, ending balance	[3]	$ 1,397	$ 1,568

[1] Billings during period includes adjustments for prior billings

[2] The prior period amounts for CTU and AIUS were recast to reflect the transition of Hippo Education from CTU to AIUS.

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