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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 USD ($) item segment | Mar. 31, 2025 USD ($) | Dec. 31, 2025 USD ($) | Dec. 31, 2025 item | Dec. 31, 2025 segment | Dec. 31, 2025 | Dec. 31, 2024 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Number of business activity | 1 |  |  | 1 | 1 |  |
Number of operating segments | segment | 1 |  |  |  | 1 |  |
Number of reportable segments | segment | 1 |  |  |  | 1 |  |
Promotional period for pricing option (buyout) |  |  | 90 days | 90 days | 90 days | 90 days |
Other revenue | $ | $ 1,599 | $ 868 | $ 4,600 |  |  |  | $ 3,216
Advertising costs | $ |  |  | $ 1,500 |  |  |  | $ 500
Capitalized software |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Useful life |  |  | 3 years | 3 years | 3 years | 3 years |
One week |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Term of contract | 7 days |  | 7 days | 7 days | 7 days | 7 days |
Two week |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Term of contract | 14 days |  | 14 days | 14 days | 14 days | 14 days |
One Month |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Term of contract | 1 month |  | 1 month | 1 month | 1 month | 1 month |
Twelve Months |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Renewal term | 12 months |  | 12 months | 12 months | 12 months | 12 months |
Eighteen Months |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Renewal term | 18 months |  | 18 months | 18 months | 18 months | 18 months |
Eight Months |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Renewal term | 8 months |  | 8 months | 8 months | 8 months | 8 months |
Twelve Month Renewal Period |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Lessee, operating lease, renewal term | 12 months |  | 12 months | 12 months | 12 months | 12 months |
Eighteen Month Renewal Period |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Lessee, operating lease, renewal term | 18 months |  | 18 months | 18 months | 18 months | 18 months |
Wayfair Inc | Revenue Benchmark | Customer Concentration Risk |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Concentration risk, percentage | 10.00% | 10.00% |  |  |  | 10.00% | 10.00%

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