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Property, Plant, and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, net $ 91,758 $ 69,595
Furniture and Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 253 368
Accumulated Depreciation (17) (216)
Property, plant and equipment, net 236 152
Demonstration Plant    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 89,240 128,013
Accumulated Depreciation (3,955) (58,570)
Property, plant and equipment, net 85,285 69,443
Construction in Progress    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, net $ 6,237 $ 0