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Note 16 - Business Segments (Details Textual) $ in Thousands | 3 Months Ended | 7 Months Ended | 9 Months Ended
--- | --- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Oct. 26, 2019 USD ($) | Dec. 31, 2020 USD ($) Boe | Dec. 31, 2019 USD ($)
Number of Reportable Segments |  |  |  | 2 |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | $ 2,740 |  |  | $ 2,740 |
Share-based Payment Arrangement, Expense | 839 | 590 |  | 2,597 | 1,236
Corporate, Non-Segment [Member] |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | 2,700 |  |  | 2,700 |
Share-based Payment Arrangement, Expense | $ 800 | $ 600 |  | $ 2,600 | $ 1,200
Minimum [Member] |  |  |  |  |
Number of Reportable Segments (Barrel of Oil Equivalent) | Boe |  |  |  | 2 |

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