Commitments and Contingencies - Sale Commitments (Details) gal in Thousands, bbl in Thousands, $ in Thousands	Sep. 30, 2024 USD ($) bbl gal	Mar. 31, 2024 USD ($)
Sale commitments for crude oil and natural gas
Net commodity derivative asset	$ (5,205)	$ 17,325
Crude oil | Fixed-Price
Sale commitments for crude oil and natural gas
Sales commitments, remainder of fiscal year	79,717
Sales commitments, year one	0
Sales commitments, year two	0
Sales commitments, year three	0
Sales commitments	$ 79,717
Sales commitments, volume, remainder of fiscal year | bbl	1,223
Sales commitments, volume, year one | bbl	0
Sales commitments, volume, year two | bbl	0
Sales commitments, volume, year three | bbl	0
Sales commitments, volume | bbl	1,223
Crude oil | Index-Price
Sale commitments for crude oil and natural gas
Sales commitments, remainder of fiscal year	$ 1,188,437
Sales commitments, year one	26,128
Sales commitments	$ 1,214,565
Sales commitments, volume, remainder of fiscal year | bbl	17,439
Sales commitments, volume, year one | bbl	390
Sales commitments, volume | bbl	17,829
Natural Gas Liquids | Fixed-Price
Sale commitments for crude oil and natural gas
Sales commitments, remainder of fiscal year	$ 145,491
Sales commitments, year one	7,454
Sales commitments, year two	3,519
Sales commitments, year three	298
Sales commitments	$ 156,762
Sales commitments, volume, remainder of fiscal year | gal	142,181
Sales commitments, volume, year one | gal	8,958
Sales commitments, volume, year two | gal	4,667
Sales commitments, volume, year three | gal	400
Sales commitments, volume | gal	156,206
Natural Gas Liquids | Index-Price
Sale commitments for crude oil and natural gas
Sales commitments, remainder of fiscal year	$ 625,514
Sales commitments, year one	28,128
Sales commitments	$ 653,642
Sales commitments, volume, remainder of fiscal year | gal	556,633
Sales commitments, volume, year one | gal	23,737
Sales commitments, volume | gal	580,370
Prepaid expenses and other current assets
Sale commitments for crude oil and natural gas
Net commodity derivative asset	$ 21,700
Accrued expenses and other payables
Sale commitments for crude oil and natural gas
Net commodity derivative asset	$ 18,400