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Equity Awards - Schedule of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of stock-based compensation expense
Stock-based compensation expense included in operating expense	$ 25,571	$ 19,772	$ 21,792
Tax benefit	6,824	5,156	5,488
Stock-based compensation expense, net of tax	18,747	14,616	16,304
Instructional and support costs
Schedule of stock-based compensation expense
Stock-based compensation expense included in operating expense	6,989	5,804	7,026
General and administration
Schedule of stock-based compensation expense
Stock-based compensation expense included in operating expense	18,239	13,461	14,766
Restructuring costs
Schedule of stock-based compensation expense
Stock-based compensation expense included in operating expense	$ 343	$ 507	$ 0

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- Definition

Amount, after tax, of expense for award under share-based payment arrangement.

+ References

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- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Amount of noncash expense for share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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