Goodwill and Other Intangible Assets - Schedule of Net Book Value of Intangible Assets Other Than Goodwill (Detail) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Intangible Assets Net Excluding Goodwill [Line Items]
Cost		$ 32,970	$ 11,800
Accumulated Amortization		(8,662)	(4,178)
Net Book Value of Amortizable intangible assets, net		24,308	7,622
Non-amortizable intangible assets		7,900	7,900
Intangible assets, net of amortization of $8,662 and $4,178 as of December 31, 2021 and 2020, respectively		32,208	15,522
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	[1]	1,400	1,400
Accumulated Amortization	[1]	(856)	(389)
Net Book Value of Amortizable intangible assets, net	[1]	544	1,011
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	[1]	22,300	8,000
Accumulated Amortization	[1]	(5,588)	(2,222)
Net Book Value of Amortizable intangible assets, net	[1]	16,712	5,778
Developed Technology Rights
Intangible Assets Net Excluding Goodwill [Line Items]
Cost	[1]	2,790
Accumulated Amortization	[1]	(278)
Net Book Value of Amortizable intangible assets, net	[1]	2,512
Trade Names
Intangible Assets Net Excluding Goodwill [Line Items]
Cost	[1]	6,480	2,400
Accumulated Amortization	[1]	(1,940)	(1,567)
Net Book Value of Amortizable intangible assets, net	[1]	$ 4,540	$ 833

[1] See Note 3 “Business Acquisitions” for further details on acquired intangible assets.