Government Grants	12 Months Ended
Dec. 31, 2025
Government Assistance [Abstract]
Government Grants	Government Grants Tax Incremental Financing On June 6, 2022, the Company executed a Tax Increment Financing Agreement (the “TIF Agreement”) with the Stillwater Economic Development Authority (the “Authority”), a public trust having as its beneficiary the City of Stillwater, Oklahoma (the “City”), whereby the Authority will provide upfront development financing assistance to the Company of up to $7.0 million for the development of the Stillwater Facility (the “Upfront Assistance”). Additionally, entry into the TIF Agreement made USARE LLC eligible to receive a manufacturing and research and development Ad Valorem Tax Exemption for a period of five years and thereafter requires the Authority to disburse to the Company 90% of the incremental Ad Valorem taxes generated by the Ad Valorem taxes assessed against the Stillwater Facility and paid by the Company. Under the terms of the TIF Agreement, among other things, the Company is required to complete the Stillwater Facility and in doing so to make an investment of approximately $140.0 million and to employ a specified number of employees at specified levels of median compensation at various stages of the development. Subject to agreed extensions, USARE LLC is also required to commence certain phases of the development of the Stillwater Facility by no later than March 31, 2026 and complete that advanced development by no later than June 30, 2027. Should the Company default on its obligations under the Stillwater Redevelopment Agreement, the Authority may terminate the agreement and make demand for immediate repayment in full of the Upfront Assistance. As of December 31, 2025 and December 31, 2024, the Company recorded $7.0 million of deferred grant income related to cash received to date as part of the TIF Agreement, all of which is noncurrent as a component of Deferred grants. As of December 31, 2025, the Company has not recognized any of the deferred grant income amounts in profit or loss related to the TIF Agreement as the associated long-lived assets requirement and employment obligations have not been met. The Company filed the Ad Valorem Tax Exemption application for the year ending December 31, 2023, in March of 2023. Approval was received November 14, 2023 from the Stillwater Economic Development Authority for the Five-Year Ad Valorem Tax Exemption. As such, the Company has not incurred any real and personal ad valorem taxes to date. Governor’s Fund On April 15, 2022, the Company entered into an agreement with the Oklahoma Department of Commerce to receive a $1.2 million award to be used for the renovation of an existing building at the Stillwater Facility (the “Governor’s Fund Agreement”), to be paid in $0.6 million increments when the Company had cumulatively spent $1.0 million and $2.0 million by March 31, 2023 and May 31, 2023, respectively, in qualifying costs related to developing the Stillwater Facility. Per the terms of the Governor’s Fund Agreement, the award is subject to repayment if the Company does not comply with certain investment requirements and employee headcount and compensation standards. During 2022, the Company incurred qualifying costs that exceeded the cumulative $2.0 million threshold specified in the contract. The total award of $1.2 million was requested and received by the Company on April 6, 2022 and was recorded as deferred grant income at the time, which will be recognized over the useful life of the related assets once placed in service.

On June 6, 2022, the Company executed a Tax Increment Financing Agreement (the “TIF Agreement”) with the Stillwater Economic Development Authority (the “Authority”), a public trust having as its beneficiary the City of Stillwater, Oklahoma (the “City”), whereby the Authority will provide upfront development financing assistance to the Company of up to $7.0 million for the development of the Stillwater Facility (the “Upfront Assistance”). Additionally, entry into the TIF Agreement made USARE LLC eligible to receive a manufacturing and research and development Ad Valorem Tax Exemption for a period of five years and thereafter requires the Authority to disburse to the Company 90% of the incremental Ad Valorem taxes generated by the Ad Valorem taxes assessed against the Stillwater Facility and paid by the Company. Under the terms of the TIF Agreement, among other things, the Company is required to complete the Stillwater Facility and in doing so to make an investment of approximately $140.0 million and to employ a specified number of employees at specified levels of median compensation at various stages of the development. Subject to agreed extensions, USARE LLC is also required to commence certain phases of the development of the Stillwater Facility by no later than March 31, 2026 and complete that advanced development by no later than June 30, 2027. Should the Company default on its obligations under the Stillwater Redevelopment Agreement, the Authority may terminate the agreement and make demand for immediate repayment in full of the Upfront Assistance.

As of December 31, 2025 and December 31, 2024, the Company recorded $7.0 million of deferred grant income related to cash received to date as part of the TIF Agreement, all of which is noncurrent as a component of Deferred grants. As of December 31, 2025, the Company has not recognized any of the deferred grant income amounts in profit or loss related to the TIF Agreement as the associated long-lived assets requirement and employment obligations have not been met. The Company filed the Ad Valorem Tax Exemption application for the year ending December 31, 2023, in March of 2023. Approval was received November 14, 2023 from the Stillwater Economic Development Authority for the Five-Year Ad Valorem Tax Exemption. As such, the Company has not incurred any real and personal ad valorem taxes to date.

On April 15, 2022, the Company entered into an agreement with the Oklahoma Department of Commerce to receive a $1.2 million award to be used for the renovation of an existing building at the Stillwater Facility (the “Governor’s Fund Agreement”), to be paid in $0.6 million increments when the Company had cumulatively spent $1.0 million and $2.0 million by March 31, 2023 and May 31, 2023, respectively, in qualifying costs related to developing the Stillwater Facility. Per the terms of the Governor’s Fund Agreement, the award is subject to repayment if the Company does not comply with certain investment requirements and employee headcount and compensation standards.

During 2022, the Company incurred qualifying costs that exceeded the cumulative $2.0 million threshold specified in the contract. The total award of $1.2 million was requested and received by the Company on April 6, 2022 and was recorded as deferred grant income at the time, which will be recognized over the useful life of the related assets once placed in service.