Significant Accounting Policies - Other Noncurrent Assets (Details) $ in Thousands	Mar. 31, 2024 USD ($) bbl	Mar. 31, 2023 USD ($) bbl	Mar. 31, 2022 USD ($)
Other Assets, Noncurrent [Abstract]
Linefill	$ 37,861	$ 37,861
Loan receivable (2)	4,776	8,592
Other	9,745	6,896
Total	52,738	57,977
Other Noncurrent Assets
Loan receivable	7,500	8,600	$ 600
Loan receivable, current	2,700
Minimum shipping fees - pipeline commitments	4,600	8,900
Other noncurrent assets
Other Noncurrent Assets
Minimum shipping fees - pipeline commitments	356	4,628
Prepaid expenses and other current assets
Other Noncurrent Assets
Minimum shipping fees - pipeline commitments	$ 4,300	$ 4,300
Crude oil
Other Noncurrent Assets
Number of barrels of product | bbl	502,686	502,686