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Intangible assets, net and goodwill - Intangible Assets Acquired through Business Combination (Details) - USD ($) | 4 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross | $ 15,100,000 |
Accumulated Amortization | (1,503,000) |
Intangible Assets, Net | $ 13,597,000 | $ 0
Customer relationships |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated Useful Lives | 6 years |
Intangible Assets, Gross | $ 5,500,000 |
Accumulated Amortization | (323,000) |
Intangible Assets, Net | $ 5,177,000 |
Vendor relationships |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated Useful Lives | 3 years |
Intangible Assets, Gross | $ 4,500,000 |
Accumulated Amortization | (529,000) |
Intangible Assets, Net | $ 3,971,000 |
Developed technology |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated Useful Lives | 3 years |
Intangible Assets, Gross | $ 4,200,000 |
Accumulated Amortization | (493,000) |
Intangible Assets, Net | $ 3,707,000 |
Tradename |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated Useful Lives | 2 years |
Intangible Assets, Gross | $ 900,000 |
Accumulated Amortization | (158,000) |
Intangible Assets, Net | $ 742,000 |

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