SEGMENT INFORMATION - Schedule of Segment Reporting Information, by Segment (Details) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2026
USD ($)
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Jun. 30, 2025
USD ($)
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Jun. 30, 2026
USD ($)
segment
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Jun. 30, 2025
USD ($)
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| Segment Reporting [Abstract] | ||||
| Number of reportable segments | segment | 1 | |||
| Segment Reporting [Line Items] | ||||
| Revenue | $ 43,231 | $ 45,263 | $ 91,966 | $ 92,858 |
| Cost of revenue | 15,247 | 17,421 | 31,708 | 37,405 |
| Interest expense | 672 | 0 | 1,332 | 0 |
| Interest income | (325) | (365) | (693) | (827) |
| Income tax expense | 34 | 74 | 56 | 102 |
| Net Loss | (6,856) | (12,001) | (12,984) | (28,152) |
| Tutoring Segment | ||||
| Segment Reporting [Line Items] | ||||
| Revenue | 43,231 | 45,263 | 91,966 | 92,858 |
| Cost of revenue | 15,247 | 17,421 | 31,708 | 37,405 |
| Employee-related expense (excluding product and development expense) | 13,865 | 19,037 | 31,239 | 39,519 |
| Marketing expense | 6,531 | 6,788 | 14,931 | 15,219 |
| Product and development expense | 9,764 | 10,683 | 18,939 | 21,417 |
| Depreciation and amortization of intangible assets | 275 | 290 | 576 | 614 |
| Other segment items | 4,024 | 3,336 | 6,862 | 7,561 |
| Interest expense | 672 | 0 | 1,332 | 0 |
| Interest income | (325) | (365) | (693) | (827) |
| Income tax expense | 34 | 74 | 56 | 102 |
| Net Loss | $ (6,856) | $ (12,001) | $ (12,984) | $ (28,152) |
| X | ||||||||||
- Definition Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. Other employee benefit expense includes, but is not limited to, service component of net periodic benefit cost for defined benefit plan. Excludes compensation cost in cost of good and service sold. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of interest expense classified as nonoperating. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services. Costs of public relations and corporate promotions are typically considered to be marketing costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of other expense (income) and loss (gain) calculated as difference between segment revenue and separately disclosed expense category to arrive at segment profit (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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