Goodwill and Other Intangible Assets - Schedule of Net Book Value of Intangible Assets Other Than Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Intangible Assets Net Excluding Goodwill [Line Items]
Cost	$ 62,760	$ 62,760
Accumulated Amortization	(23,612)	(15,981)
Accumulated Impairments	(10,829)	(1,115)
Net Book Value of Amortizable intangible assets, net	28,319	45,664
Non-amortizable intangible assets	7,900	7,900
Intangible assets, net of amortization of $23,612 and $15,981 as of December 31, 2023 and 2022, respectively	36,219	53,564
Accreditation Rights [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Non-amortizable intangible assets	1,000	1,000
Course Curriculum
Intangible Assets Net Excluding Goodwill [Line Items]
Cost	2,790	2,790
Accumulated Amortization	(1,817)	(1,461)
Net Book Value of Amortizable intangible assets, net	973	1,329
CTU Trade Name [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Non-amortizable intangible assets	6,900	6,900
Customer Relationship
Intangible Assets Net Excluding Goodwill [Line Items]
Cost	38,090	38,090
Accumulated Amortization	(15,502)	(10,815)
Accumulated Impairments	(111)	(111)
Net Book Value of Amortizable intangible assets, net	22,477	27,164
Developed Technology Rights
Intangible Assets Net Excluding Goodwill [Line Items]
Cost	8,820	8,820
Accumulated Amortization	(2,490)	(1,022)
Accumulated Impairments	(5,513)	(461)
Net Book Value of Amortizable intangible assets, net	817	7,337
Trade Names
Intangible Assets Net Excluding Goodwill [Line Items]
Cost	13,060	13,060
Accumulated Amortization	(3,803)	(2,683)
Accumulated Impairments	(5,205)	(543)
Net Book Value of Amortizable intangible assets, net	$ 4,052	$ 9,834