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Business Acquisition - Additional Information (Detail) - USD ($) $ in Thousands |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 10, 2021 | Aug. 02, 2021 | Mar. 02, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  |  |  | $ 162,579 | $ 118,312 | $ 87,356
DigitalCrafts |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 16,300 |  |  |  |
Working Capital Payment |  | 200 |  |  |  |
Contingent consideration year of expected payment |  |  |  | 2024 |  |
Purchase price of the assets |  | 18,356 |  |  |  |
Fair values of acquired tangible and identifiable intangible assets |  | 20,028 |  |  |  |
Fair values of assumed liabilities |  | 1,672 |  |  |  |
Goodwill |  | 16,477 |  |  |  |
DigitalCrafts | Goodwill |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  | 16,500 |  |  |  |
DigitalCrafts | Trade Names |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets |  | $ 740 |  |  |  |
Intangible assets subject to amortization, useful life |  | 5 years |  |  |  |
DigitalCrafts | Customer Relationship |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets |  | $ 200 |  |  |  |
Intangible assets subject to amortization, useful life |  | 3 years |  |  |  |
DigitalCrafts | Developed Technology Rights |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets |  | $ 830 |  |  |  |
Intangible assets subject to amortization, useful life |  | 3 years |  |  |  |
DigitalCrafts | Fair Value |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair values of acquired tangible and identifiable intangible assets |  | $ 20,000 |  |  |  |
Fair values of assumed liabilities |  | 1,700 |  |  |  |
DigitalCrafts | Fair Value | Trade Names |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets |  | 700 |  |  |  |
DigitalCrafts | Fair Value | Customer Relationship |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets |  | 1,000 |  |  |  |
DigitalCrafts | Contingent Consideration |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Contingent consideration payment |  | 2,500 |  |  |  |
Contingent Consideration Fair Value |  | $ 1,900 |  |  |  |
Hippo |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Payments to Acquire Businesses, Gross | $ 42,000 |  |  |  |  |
Contingent consideration year of expected payment |  |  |  | 2024 |  |
Purchase price of the assets | 43,270 |  |  |  |  |
Fair values of acquired tangible and identifiable intangible assets | 47,537 |  |  |  |  |
Fair values of assumed liabilities | 4,267 |  |  |  |  |
Goodwill | 27,790 |  |  |  |  |
Hippo | Goodwill |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill | 27,800 |  |  |  |  |
Hippo | Trade Names |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets | $ 3,340 |  |  |  |  |
Intangible assets subject to amortization, useful life | 10 years |  |  |  |  |
Hippo | Customer Relationship |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets | $ 14,100 |  |  |  |  |
Intangible assets subject to amortization, useful life | 7 years |  |  |  |  |
Hippo | Developed Technology Rights |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets | $ 1,960 |  |  |  |  |
Intangible assets subject to amortization, useful life | 4 years |  |  |  |  |
Hippo | Fair Value |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair values of acquired tangible and identifiable intangible assets | $ 47,500 |  |  |  |  |
Fair values of assumed liabilities | 4,300 |  |  |  |  |
Hippo | Fair Value | Trade Names |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets | 3,300 |  |  |  |  |
Hippo | Fair Value | Customer Relationship |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets | 14,100 |  |  |  |  |
Hippo | Fair Value | Developed Technology Rights |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets | 2,000 |  |  |  |  |
Hippo | Restricted Cash [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Amount set aside in escrow account | 1,200 |  |  |  |  |
Hippo | Contingent Consideration |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Contingent consideration payment | 4,000 |  |  |  |  |
Contingent Consideration Fair Value | $ 1,300 |  |  |  |  |
Trident University International |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  |  | 43,800 |
Purchase price of the assets |  |  | $ 43,819 |  |  |
Fair values of acquired tangible and identifiable intangible assets |  |  | 53,136 |  |  |
Fair values of assumed liabilities |  |  | 9,317 |  |  |
Goodwill |  |  | 30,956 |  |  |
Trident University International | Trade Names |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets |  |  | $ 1,000 |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 5 years |  |  |
Trident University International | Customer Relationship |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets |  |  | $ 8,000 |  |  |
Trident University International | Student Relationships and Course Curriculum [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets |  |  | $ 9,400 |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 3 years |  |  |
Trident University International | Restricted Cash [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Amount set aside in escrow account |  |  |  |  | $ 4,000 |

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