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Risk concentrations (Details) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Risk concentrations |  |  |
Percentage of wells operated by third-party operating partners (percent) | 100.00% |  |
Sales revenue | Oil and natural gas |  |  |
Risk concentrations |  |  |
Benchmark percentage of revenues contributed by major operators (percent) | 10.00% | 10.00% | 10.00%
Benchmark used to determine the disclosure of revenues contributed by major operators (percent) | 10.00% | 10.00% | 10.00%
Sales revenue | Oil and natural gas | Operator A |  |  |
Risk concentrations |  |  |
Concentration risk (as a percent) | 11.00% | 12.00% | 12.00%
Sales revenue | Oil and natural gas | Operator B |  |  |
Risk concentrations |  |  |
Concentration risk (as a percent) |  |  | 15.00%
Sales revenue | Oil and natural gas | Operator C |  |  |
Risk concentrations |  |  |
Concentration risk (as a percent) | 12.00% | 10.00% |
Sales revenue | Oil and natural gas | Operator D |  |  |
Risk concentrations |  |  |
Concentration risk (as a percent) |  | 10.00% |

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the percentage of revenues attributable to oil and gas operators who account for 10% or more of annual revenues. + References No definition available. + Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-42 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-21 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-20 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482861/275-10-50-18 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482861/275-10-50-20 + Details
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