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v3.23.1

Note 10 - Derivatives and Fair Value (Details Textual) | Sep. 24, 2021 $ / bbl bbl | Aug. 06, 2021 $ / bbl bbl | May 06, 2021 $ / bbl bbl | Jan. 22, 2021 $ / bbl bbl
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Commodity Contract February2021 Through January 2022 [Member] |  |  |  |
Derivative, Swap Type, Average Fixed Price (in USD per Barrel of Oil) | $ / bbl |  |  |  | 53.10
Derivative, Nonmonetary Notional Amount, Volume (Barrel of Oil) | bbl |  |  |  | 709,262
Commodity Contract, May 2021 Through October 2021 [Member] |  |  |  |
Derivative, Swap Type, Average Fixed Price (in USD per Barrel of Oil) | $ / bbl |  |  | 66.51 |
Derivative, Nonmonetary Notional Amount, Volume (Barrel of Oil) | bbl |  |  | 672,533 |
Commodity Contract, November 2021 Through February 2022 [Member] |  |  |  |
Derivative, Swap Type, Average Fixed Price (in USD per Barrel of Oil) | $ / bbl |  | 67.70 |  |
Derivative, Nonmonetary Notional Amount, Volume (Barrel of Oil) | bbl |  | 314,420 |  |
Commodity Contract Three [Member] |  |  |  |
Derivative, Swap Type, Average Fixed Price (in USD per Barrel of Oil) | $ / bbl | 72.00 |  |  |
Derivative, Nonmonetary Notional Amount, Volume (Barrel of Oil) | bbl | 460,000 |  |  |

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- Definition Nominal volume used to calculate payments on a derivative instrument. + References No definition available. + Details
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- Definition Average fixed price related to the group of price risk swap derivatives. + References No definition available. + Details
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