v3.26.1
Fair Value of Financial Instruments - Fair Value of Derivative Assets and Liabilities (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Assets:      
Derivative assets $ 6,337 $ 89  
Netting of counterparty contracts, assets (6,186) (67)  
Net cash collateral provided 5,658 $ 1,527  
Derivative Asset, Statement of Financial Position [Extensible Enumeration]   Prepaid expenses and other current assets  
Derivatives 5,809 $ 1,549  
Liabilities:      
Derivative liabilities (48,285) (9,777)  
Netting of counterparty contracts, liabilities 6,186 67  
Net cash collateral provided 8,360 1,577  
Derivatives (33,739) (8,133)  
Derivative assets (liabilities)      
Net derivative liability (27,930) (6,584)  
Net adjustments to fair value of derivatives (42,049) (4,909) $ (12,321)
Commodity contracts      
Derivative assets (liabilities)      
Net adjustments to fair value of derivatives (43,341) (4,482) (12,836)
Interest rate swaps      
Derivative assets (liabilities)      
Net adjustments to fair value of derivatives 1,292 (427) $ 515
Prepaid expenses and other current assets      
Derivative assets (liabilities)      
Net derivative liability 5,809 1,549  
Accrued expenses and other payables      
Derivative assets (liabilities)      
Net derivative liability (31,619) (6,427)  
Other noncurrent liabilities      
Derivative assets (liabilities)      
Net derivative liability (2,120) (1,706)  
Level 1      
Assets:      
Derivative assets 6,118 67  
Liabilities:      
Derivative liabilities (14,478) (1,644)  
Level 2      
Assets:      
Derivative assets 219 22  
Liabilities:      
Derivative liabilities $ (33,807) $ (8,133)