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Debt - Schedule of Long-Term Debt (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Nov. 30, 2024
USD ($)
agreement
Aug. 31, 2024
USD ($)
agreement
Nov. 30, 2024
USD ($)
agreement
May 31, 2024
USD ($)
Debt Instrument [Line Items]        
Proceeds from SAFE agreement $ 12,000 $ 12,000 $ 12,000  
Number of SAFE agreements | agreement 2 2 2  
Medium-Term Note        
Debt Instrument [Line Items]        
Other long-term debt $ 665,833   $ 665,833  
Deferred financing costs, net of amortization (191,047)   (191,047) $ (501)
Less: Current portion of debt (6,543)   (6,543) (45,918)
Long-term debt, net $ 468,244   $ 468,244 79,472
Senior Unsecured Convertible Notes | Convertible Debt        
Debt Instrument [Line Items]        
Interest Rate 2.75%   2.75%  
Other long-term debt $ 450,000   $ 450,000 0
Macquarie Promissory Note | Promissory note        
Debt Instrument [Line Items]        
Interest Rate 0.25%   0.25%  
Other long-term debt $ 166,500   $ 166,500 0
Starion Ellendale Loan | Medium-Term Note        
Debt Instrument [Line Items]        
Interest Rate 7.48%   7.48%  
Other long-term debt $ 14,256   $ 14,256 16,145
Vantage Transformer Loan | Medium-Term Note        
Debt Instrument [Line Items]        
Interest Rate 6.50%   6.50%  
Other long-term debt $ 0   $ 0 3,609
Cornerstone bank loan | Medium-Term Note        
Debt Instrument [Line Items]        
Interest Rate 8.59%   8.59%  
Other long-term debt $ 14,255   $ 14,255 15,576
Yorkville Convertible Debt | Convertible Debt        
Debt Instrument [Line Items]        
Interest Rate 0.00%   0.00%  
Other long-term debt $ 0   $ 0 80,243
Starion Term Loan | Medium-Term Note        
Debt Instrument [Line Items]        
Interest Rate 6.50%   6.50%  
Other long-term debt $ 8,564   $ 8,564 10,021
Other Long-Term Debt | Medium-Term Note        
Debt Instrument [Line Items]        
Other long-term debt $ 12,259   $ 12,259 $ 297