v3.26.1
Related Party Transactions - Schedule of Related Party Transactions (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Related Party Transaction [Line Items]        
General and administrative $ 6,419 $ 13,578 $ 15,305 $ 22,270
Research and development 4,220 26,618 23,921 49,218
Project development 1,126 27,198 2,130 31,687
Related Party        
Related Party Transaction [Line Items]        
General and administrative 33 42 61 69
Research and development 221 20,846 13,476 39,259
Project development 0 19,533 0 19,533
Related Party | BHES        
Related Party Transaction [Line Items]        
Research and development expense, net of adjustments (90) 20,178 12,917 38,005
Project development 0 19,533 0 19,533
Related Party | Master services agreement administrative costs        
Related Party Transaction [Line Items]        
General and administrative 33 42 61 69
Related Party | Master services agreement costs for the La Porte Demonstration Facility        
Related Party Transaction [Line Items]        
Research and development $ 311 $ 668 $ 559 $ 1,254