Goodwill and Other Intangible Assets - Schedule of Net Book Value of Intangible Assets Other Than Goodwill (Detail) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Intangible Assets Net Excluding Goodwill [Line Items]
Cost		$ 11,800	$ 1,400
Accumulated Amortization		(4,178)	(1,400)
Net Book Value of Amortizable intangible assets, net		7,622
Non-amortizable intangible assets		7,900	7,900
Intangible assets, net of amortization of $4,178 and $1,400 as of December 31, 2020 and 2019, respectively		15,522	7,900
Accreditation Rights [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Non-amortizable intangible assets		1,000	1,000
Course Curriculum [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Cost	[1]	1,400
Accumulated Amortization	[1]	(389)
Net Book Value of Amortizable intangible assets, net	[1]	1,011
CTU Trade Name [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Non-amortizable intangible assets		6,900	6,900
Student Relationships [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Cost	[1]	8,000
Accumulated Amortization	[1]	(2,222)
Net Book Value of Amortizable intangible assets, net	[1]	5,778
Trade Name [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Cost		2,400	1,400
Accumulated Amortization		(1,567)	$ (1,400)
Net Book Value of Amortizable intangible assets, net		$ 833

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