Segment Information - Schedule of Revenue by Product Line and Geographic Areas (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue from External Customer [Line Items]
Net revenues	$ 376,908	$ 617,574	$ 716,295
United States
Revenue from External Customer [Line Items]
Net revenues	320,291	537,605	616,359
International
Revenue from External Customer [Line Items]
Net revenues	56,617	79,969	99,936
Chegg Skilling
Revenue from External Customer [Line Items]
Net revenues	68,654	73,959	76,812
Academic Services
Revenue from External Customer [Line Items]
Net revenues	$ 308,254	$ 543,615	$ 639,483

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details