Business Acquisition - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands		Dec. 31, 2025	Dec. 31, 2024	Dec. 02, 2024	Dec. 31, 2023
Assets:
Goodwill		$ 265,697	$ 258,012		$ 241,162
USAHS [Member]
Assets:
Student and other receivables				$ 1,771
Prepaid assets				4,727
Property and equipment				78,800
ROU assets				53,271
Deferred tax asset, net	[1]			40,120
Other assets				977
Goodwill	[1]			24,535
Total assets acquired				268,501
Liabilities:
Accounts payable and other accrued liabilities				9,269
Deferred revenue				10,137
Lease liabilities				55,625
Construction financing				56,500
Total liabilities assumed				131,531
Net assets acquired				136,970
Customer Relationships [Member] | USAHS [Member]
Assets:
Fair value of intangible assets				14,000
Course Curriculum [Member] | USAHS [Member]
Assets:
Fair value of intangible assets				15,500
Accreditation Rights [Member] | USAHS [Member]
Assets:
Fair value of intangible assets				25,000
Trade Name [Member] | USAHS [Member]
Assets:
Fair value of intangible assets				$ 9,800

[1] Goodwill and deferred tax asset, net include an adjustment in the current year of approximately $7.5 million upon finalization of the USAHS deferred tax rate applied to the indefinite-lived intangible assets and various adjustments identified while completing USAHS’s final pre-acquisition tax returns.