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Note 18 - Business Segments (Tables) | 3 Months Ended
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Jun. 30, 2023
Notes Tables |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | Three Months Ended June 30, |
|  | 2023 |  |  | 2022 |
Revenues: |  |  |  |  |  |  |  |
Grid |  | $ | 25,737 |  |  | $ | 19,829 |
Wind |  |  | 4,517 |  |  |  | 2,850 |
Total |  | $ | 30,254 |  |  | $ | 22,679 |
|  | Three Months Ended June 30, |
|  | 2023 |  |  | 2022 |
Operating loss: |  |  |  |  |  |  |  |
Grid |  | $ | (1,971 | ) |  | $ | (7,281 | )
Wind |  |  | (649 | ) |  |  | (386 | )
Unallocated corporate expenses |  |  | (2,713 | ) |  |  | (1,202 | )
Total |  | $ | (5,333 | ) |  | $ | (8,869 | )
Reconciliation of Assets from Segment to Consolidated [Table Text Block] |
|  | June 30, 2023 |  |  | March 31, 2023 |
Grid |  | $ | 136,941 |  |  | $ | 135,296 |
Wind |  |  | 10,374 |  |  |  | 14,361 |
Corporate assets |  |  | 23,319 |  |  |  | 25,904 |
Total |  | $ | 170,634 |  |  | $ | 175,561 |

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