Significant Accounting Policies - Other Noncurrent Assets (Details) $ in Thousands	Jun. 30, 2023 USD ($) bbl	Mar. 31, 2023 USD ($) bbl
Other Assets, Noncurrent [Abstract]
Linefill	$ 37,861	$ 37,861
Loan receivable (2)	10,308	8,592
Other	5,700	6,896
Total	57,429	57,977
Other Noncurrent Assets
Minimum shipping fees - pipeline commitments	7,800
Other noncurrent assets
Other Noncurrent Assets
Minimum shipping fees - pipeline commitments	3,560	$ 4,628
Prepaid expenses and other current assets
Other Noncurrent Assets
Minimum shipping fees - pipeline commitments	$ 4,300
Crude oil
Other Noncurrent Assets
Number of barrels of product | bbl	502,686	502,686