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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.

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