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Goodwill and Other Intangible Assets - Narrative (Details) € in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 22, 2021 USD ($) | Jan. 22, 2021 EUR (€) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($)
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |  |  |  |  |  |
Goodwill, period increase (decrease) |  |  | $ 0 |  | $ 0 |  |
Foreign currency losses |  |  |  |  | 500,000 |  | $ 2,200,000
Amortization expense for intangible assets |  |  | $ 900,000 | $ 900,000 | $ 2,800,000 | $ 2,800,000 |
Europe | 3D Hubs, Inc. (Hubs) |  |  |  |  |  |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |  |  |  |  |  |
Intangible assets acquired | € |  | € 11.6 |  |  |  |  |
United States | 3D Hubs, Inc. (Hubs) |  |  |  |  |  |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |  |  |  |  |  |
Intangible assets acquired | $ 16,600,000 |  |  |  |  |  |

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