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Stockholders' Equity - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Stock-based compensation expense included in the unaudited condensed consolidated statements of operations
Total stock-based compensation expense	$ 4,511	$ 10,983	$ 9,835	$ 25,546
Curriculum and teaching
Stock-based compensation expense included in the unaudited condensed consolidated statements of operations
Total stock-based compensation expense	95	51	135	91
Servicing and support
Stock-based compensation expense included in the unaudited condensed consolidated statements of operations
Total stock-based compensation expense	1,118	2,239	2,592	5,516
Technology and content development
Stock-based compensation expense included in the unaudited condensed consolidated statements of operations
Total stock-based compensation expense	393	1,960	1,002	3,617
Marketing and sales
Stock-based compensation expense included in the unaudited condensed consolidated statements of operations
Total stock-based compensation expense	695	1,369	1,208	2,523
General and administrative
Stock-based compensation expense included in the unaudited condensed consolidated statements of operations
Total stock-based compensation expense	$ 2,210	$ 5,364	$ 4,898	$ 13,799

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1

Reference 2: 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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+ References

No definition available.

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