v3.26.1
Derivative Assets - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Nov. 04, 2025
Nov. 30, 2025
May 31, 2026
May 31, 2025
May 31, 2024
Mar. 18, 2026
Derivative [Line Items]            
Derivative assets     $ 163,283 $ 0    
Derivative loss, not disclosed     13.3 million      
Loss on derivative     $ 13,300      
Gain on change in fair value of derivatives     75,818 $ 0 $ 0  
B&W Warrant            
Derivative [Line Items]            
Warrants issued to purchase of common stock (in shares)           2,630,000
B&W Warrant | Base Electron, Inc.            
Derivative [Line Items]            
Right to purchase (in shares)           5,230,000
Babcock & Wilcox Enterprises, Inc            
Derivative [Line Items]            
Amount contributed $ 2,000 $ 2,000        
Shares exchanged (in shares) 500,000          
Warrants, exercise price (in dollars per share) $ 4.11          
Warrants issued to purchase of common stock (in shares) 2,600,000          
Gain on change in fair value of derivatives     $ 89,200      
Babcock & Wilcox Enterprises, Inc | Additional Warrants            
Derivative [Line Items]            
Warrants, exercise price (in dollars per share) $ 4.11          
Warrants issued to purchase of common stock (in shares) 7,860,000