Fair Value of Financial Instruments - Fair Value of Commodity Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Derivative assets (liabilities)
Net commodity derivative asset	$ 51,203	$ 15,704
Prepaid expenses and other current assets
Derivative assets (liabilities)
Net commodity derivative asset	52,000
Accrued expenses and other payables
Derivative assets (liabilities)
Net commodity derivative asset	23,000
Commodity contracts
Assets:
Derivative assets	125,321	49,832
Netting of counterparty contracts, assets	(47,585)	(12,648)
Net cash collateral provided	839	2,660
Commodity derivatives	78,575	39,844
Liabilities:
Derivative liabilities	(74,957)	(42,331)
Netting of counterparty contracts, liabilities	47,585	12,648
Net cash collateral provided	0	5,543
Commodity derivatives	(27,372)	(24,140)
Derivative assets (liabilities)
Net commodity derivative asset	51,203	15,704
Commodity contracts | Prepaid expenses and other current assets
Derivative assets (liabilities)
Net commodity derivative asset	78,575	39,844
Commodity contracts | Accrued expenses and other payables
Derivative assets (liabilities)
Net commodity derivative asset	(27,108)	(21,562)
Commodity contracts | Other noncurrent liabilities
Derivative assets (liabilities)
Net commodity derivative asset	(264)	(2,578)
Level 1 | Commodity contracts
Assets:
Derivative assets	73,353	12,312
Liabilities:
Derivative liabilities	(47,585)	(17,857)
Level 2 | Commodity contracts
Assets:
Derivative assets	51,968	37,520
Liabilities:
Derivative liabilities	$ (27,372)	$ (24,474)