v3.25.3
RELATED PARTY - Schedule of transactions - General Atomics (Details) - General Atomics - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
May 16, 2024
Sep. 30, 2025
Dec. 31, 2024
Related Party      
Balance of funds owing to (remaining on deposit with) General Atomics as a related party balance at beginning of period   $ 895 $ (3,435)
Funds transferred to General Atomics during the period     (8,500)
Funds returned by General Atomics during the period $ 3,811   3,811
The Company's share of Demonstration Plant project costs incurred during the period (1)   (2,509) 9,019
Balance of funds owing to (due from) General Atomics as a related party balance at end of period   $ (1,614) $ 895