Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Business Acquisition - Additional Information (Detail) - USD ($) $ in Thousands	Jul. 01, 2022	Sep. 30, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill		$ 184,135	$ 162,579
California Southern University [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 40,000
Fair values of acquired tangible and identifiable intangible assets	42,460
Fair values of assumed liabilities	2,423
Goodwill	21,556
California Southern University [Member] \| Goodwill [Member]
Business Acquisition [Line Items]
Goodwill	21,600
California Southern University [Member] \| Customer Relationship [Member]
Business Acquisition [Line Items]
Fair value of intangible assets	$ 14,530
Acquired Finite Lived Intangible Assets Weighted Average Useful Life	15 years
California Southern University [Member] \| Trade Names [Member]
Business Acquisition [Line Items]
Fair value of intangible assets	$ 1,480
Acquired Finite Lived Intangible Assets Weighted Average Useful Life	10 years
California Southern University [Member] \| Course Curriculum [Member]
Business Acquisition [Line Items]
Fair value of intangible assets	$ 1,390
Acquired Finite Lived Intangible Assets Weighted Average Useful Life	5 years
California Southern University [Member] \| Restricted Cash [Member]
Business Acquisition [Line Items]
Amount set aside in escrow account	$ 1,000
California Southern University [Member] \| Fair Value [Member]
Business Acquisition [Line Items]
Fair values of acquired tangible and identifiable intangible assets	42,500
Fair values of assumed liabilities	2,400
California Southern University [Member] \| Fair Value [Member] \| Customer Relationship [Member]
Business Acquisition [Line Items]
Fair value of intangible assets	14,500
California Southern University [Member] \| Fair Value [Member] \| Trade Names [Member]
Business Acquisition [Line Items]
Fair value of intangible assets	$ 1,500