Quarterly report [Sections 13 or 15(d)]

DEBT AND FINANCING LEASE LIABILITIES - Long-term Debt (Details)

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DEBT AND FINANCING LEASE LIABILITIES - Long-term Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Financing lease liabilities $ 12,046 $ 12,082
Total debt and financing lease liabilities 2,040,953 1,936,831
Less: current maturities 162,176 132,125
Less: unamortized discount and debt issuance costs 54,246 54,998
Long-term debt and financing lease liabilities, net of current portion, unamortized discount and debt issuance costs [1] 1,824,531 1,749,708
Secured Debt | Senior secured corporate term loans    
Debt Instrument [Line Items]    
Long-term debt, gross 138,750 95,000
Secured Debt | Second lien corporate term loan    
Debt Instrument [Line Items]    
Long-term debt, gross 100,000 100,000
Revolving Credit Facility | Line of Credit | Revolving Senior Secured Credit Facility    
Debt Instrument [Line Items]    
Long-term debt, gross 150,000 150,000
Revolving Credit Facility | Line of Credit | Energy asset construction facilities    
Debt Instrument [Line Items]    
Long-term debt, gross 388,516 359,031
Revolving Credit Facility | Line of Credit | Energy asset operating facilities    
Debt Instrument [Line Items]    
Long-term debt, gross 856,464 827,327
Revolving Credit Facility | Financing Facility | Other financing facilities    
Debt Instrument [Line Items]    
Long-term debt, gross 395,177 $ 393,414
Revolving Senior Secured Credit Facility | Line of Credit    
Debt Instrument [Line Items]    
Funds available for borrowing $ 44,319  
[1] Includes restricted assets of consolidated variable interest entities (“VIEs”) at March 31, 2026 and December 31, 2025 of $314,414 and $329,354, respectively. Includes liabilities of consolidated VIEs at March 31, 2026 and December 31, 2025 of $165,382 and $179,314, respectively. See Note 13.