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Commitments and Contingencies (Tables) | 12 Months Ended
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Mar. 31, 2026
Commitments and Contingencies Disclosure [Abstract] |
Schedule of change in asset retirement obligation | The following table summarizes changes in our asset retirement obligations, which is reported within other noncurrent liabilities in our consolidated balance sheets (in thousands):
Asset retirement obligations at March 31, 2024 |  | $ | 56,574 |
Liabilities incurred |  | 12,161 |
Liabilities associated with disposed assets (1) |  | (274) |
Liabilities settled |  | (1,940) |
Liabilities held for sale (2) |  | (1,149) |
Accretion expense |  | 4,200 |
Asset retirement obligations at March 31, 2025 |  | 69,572 |
Liabilities incurred |  | 10,222 |
Liabilities associated with disposed assets (3) |  | (402) |
Liabilities settled |  | (8,258) |
Accretion expense |  | 5,174 |
Asset retirement obligations at March 31, 2026 |  | $ | 76,308 |
(1) Relates to the sale of certain saltwater disposal wells within our Water Solutions segment (see Note 17). (2) Relates to asset retirement obligations classified as held for sale for the sale of a portion of our Liquids Logistics segment and certain assets within our Water Solutions segment (see Note 18). (3) Relates to the sale of a certain saltwater disposal well within our Water Solutions segment.
Schedule of outstanding purchase commitments | At March 31, 2026, we had the following commodity purchase commitments:
|  | Crude Oil (1) |  | Natural Gas Liquids
|  | Value |  | Volume (in barrels) |  | Value |  | Volume (in gallons)
|  | (in thousands)
Fixed-Price Commodity Purchase Commitments: |  |  |  |  |  |  |  |
Year Ending March 31, |  |  |  |  |  |  |  |
2027 |  | $ | 52,616 |  |  | 519 |  |  | $ | 11,224 |  |  | 14,042 |
2028 |  | — |  |  | — |  |  | 1,290 |  |  | 1,890 |
Total |  | $ | 52,616 |  |  | 519 |  |  | $ | 12,514 |  |  | 15,932 |
Index-Price Commodity Purchase Commitments: |  |  |  |  |  |  |  |
Year Ending March 31, |  |  |  |  |  |  |  |
2027 |  | $ | 1,009,011 |  |  | 10,968 |  |  | $ | 755,075 |  |  | 772,838 |
2028 |  | 322,290 |  |  | 4,676 |  |  | 21,854 |  |  | 24,150 |
2029 |  | 118,887 |  |  | 1,810 |  |  | — |  |  | — |
2030 |  | 109,189 |  |  | 1,811 |  |  | — |  |  | — |
2031 |  | 33,527 |  |  | 548 |  |  | — |  |  | — |
Thereafter |  | 119,595 |  |  | 2,010 |  |  | — |  |  | — |
Total |  | $ | 1,712,499 |  |  | 21,823 |  |  | $ | 776,929 |  |  | 796,988 |
(1) Our crude oil index-price purchase commitments exceed our crude oil index-price sales commitments (presented below) due primarily to our long-term purchase commitments for crude oil that we purchase and ship on the Grand Mesa Pipeline.
Schedule of outstanding sales commitments | At March 31, 2026, we had the following commodity sale commitments:
|  | Crude Oil |  | Natural Gas Liquids
|  | Value |  | Volume (in barrels) |  | Value |  | Volume (in gallons)
|  | (in thousands)
Fixed-Price Commodity Sale Commitments: |  |  |  |  |  |  |  |
Year Ending March 31, |  |  |  |  |  |  |  |
2027 |  | $ | 52,616 |  |  | 519 |  |  | $ | 27,828 |  |  | 27,219 |
2028 |  | — |  |  | — |  |  | 1,461 |  |  | 1,974 |
2029 |  | — |  |  | — |  |  | 19 |  |  | 19 |
2030 |  | — |  |  | — |  |  | 19 |  |  | 19 |
Total |  | $ | 52,616 |  |  | 519 |  |  | $ | 29,327 |  |  | 29,231 |
Index-Price Commodity Sale Commitments: |  |  |  |  |  |  |  |
Year Ending March 31, |  |  |  |  |  |  |  |
2027 |  | $ | 818,866 |  |  | 8,391 |  |  | $ | 540,675 |  |  | 462,173 |
2028 |  | 87,274 |  |  | 1,266 |  |  | 1,328 |  |  | 1,620 |
2029 |  | 82,905 |  |  | 1,263 |  |  | — |  |  | — |
2030 |  | 75,863 |  |  | 1,263 |  |  | — |  |  | — |
Total |  | $ | 1,064,908 |  |  | 12,183 |  |  | $ | 542,003 |  |  | 463,793 |
Schedule of future minimum payments under contractual commitments | The following table summarizes future minimum payments under these agreements at March 31, 2026 (in thousands):
Year Ending March 31, |
2027 | $ | 6,447 |
2028 | 4,827 |
2029 | 2,691 |
2030 | 1,665 |
2031 | 1,409 |
Thereafter | 1,190 |
Total | $ | 18,229 |

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- Definition Tabular disclosure of unconditional sales obligations, including the nature and significant terms of an unconditional sales obligation; the amount of the fixed and determinable portion of the obligation as of the date of the latest balance sheet presented in the aggregate and, if determinable, for each of the five succeeding fiscal years; the nature of any variable components of the obligation; the sale amount under the obligation for the reporting period; and may include the amount of imputed interest necessary to reduce the obligation to present value. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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