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COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2026 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2026 USD ($) assessment | Jun. 30, 2025 USD ($) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2017 USD ($)
Recorded Unconditional Purchase Obligation [Line Items] |  |  |  |  |  |  |
Contingency reserve, amount | $ 9,311 |  | $ 9,311 |  | $ 9,724 |  |
Indemnification liabilities | 3,400 |  | 3,400 |  |  | $ 2,800 |
Income (loss) from discontinued operations | (16) | $ 0 | (46) | $ (471) |  |  |
Indemnification liabilities, contingent liability and interest and penalties | 600 |  | 600 |  |  |  |
Maximum exposure of indemnification liability | 10,200 |  | 10,200 |  |  |  |
Groupon Latin America |  |  |  |  |  |  |
Recorded Unconditional Purchase Obligation [Line Items] |  |  |  |  |  |  |
Estimated indemnification liability |  |  |  |  |  |  | $ 5,400
Income (loss) from discontinued operations |  |  | $ (500) |  |  |  |
Pending Litigation |  |  |  |  |  |  |
Recorded Unconditional Purchase Obligation [Line Items] |  |  |  |  |  |  |
Number of VAT assessments | assessment |  |  | 2 |  |  |  |
Portuguese VAT Assessment, Periods 2013 to 2015 | Pending Litigation |  |  |  |  |  |  |
Recorded Unconditional Purchase Obligation [Line Items] |  |  |  |  |  |  |
Value added tax assessment, bank guarantee | 4,000 |  | $ 4,000 |  |  |  |
Portuguese VAT Assessment, Periods 2013 to 2015 | Maximum | Pending Litigation |  |  |  |  |  |  |
Recorded Unconditional Purchase Obligation [Line Items] |  |  |  |  |  |  |
Foreign VAT assessments |  |  | 4,500 |  |  |  |
Portuguese VAT Assessment, Periods 2011 to 2012 | Pending Litigation |  |  |  |  |  |  |
Recorded Unconditional Purchase Obligation [Line Items] |  |  |  |  |  |  |
Foreign VAT assessments |  |  | 4,800 |  |  |  |
Value added tax assessment, bank guarantee | $ 4,200 |  | $ 4,200 |  |  |  |
Contingency reserve, amount |  |  |  |  |  | $ 4,600 |

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