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Property, Plant, and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Assets acquired under finance lease	$ 349	$ 349
Total property, plant, and equipment, gross	127,200	172,701
Accumulated depreciation and amortization	(30,605)	(21,231)
Total property, plant, and equipment, net	96,595	151,470
Finance lease, right-of-use asset, accumulated amortization	45	18
Demonstration Plant
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	122,352	122,845
Furniture and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,173	1,069
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,326	$ 48,438

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- Definition

Amount of accumulated amortization of right-of-use asset from finance lease.

+ References

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Amount, before accumulated amortization, of right-of-use asset from finance lease.

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Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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