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Note 2 - Revenue Recognition (Tables) | 3 Months Ended
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Jun. 30, 2024
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Three Months Ended June 30, 2024 |
Product Line: |  | Grid |  |  | Wind |
Equipment and systems |  | $ | 29,726 |  |  | $ | 7,424 |
Services and technology development |  |  | 2,610 |  |  |  | 530 |
Total |  | $ | 32,336 |  |  | $ | 7,954 |
Region: |  |  |  |  |  |  |  |
Americas |  | $ | 30,479 |  |  | $ | — |
Asia Pacific |  |  | 1,199 |  |  |  | 7,952 |
EMEA |  |  | 658 |  |  |  | 2 |
Total |  | $ | 32,336 |  |  | $ | 7,954 |
|  | Three Months Ended June 30, 2023 |
Product Line: |  | Grid |  |  | Wind |
Equipment and systems |  | $ | 23,126 |  |  | $ | 3,982 |
Services and technology development |  |  | 2,611 |  |  |  | 535 |
Total |  | $ | 25,737 |  |  | $ | 4,517 |
Region: |  |  |  |  |  |  |  |
Americas |  | $ | 23,161 |  |  | $ | — |
Asia Pacific |  |  | 1,711 |  |  |  | 4,465 |
EMEA |  |  | 865 |  |  |  | 52 |
Total |  | $ | 25,737 |  |  | $ | 4,517 |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
|  | Unbilled Accounts Receivable |  |  | Deferred Program Costs |  |  | Contract Liabilities |
Beginning balance as of March 31, 2024 |  | $ | 6,150 |  |  | $ | 2,523 |  |  | $ | 57,829 |
Increases for costs incurred to fulfill performance obligations |  |  | — |  |  |  | 2,119 |  |  |  | — |
Increase (decrease) due to customer billings |  |  | (3,521 | ) |  |  | — |  |  |  | 27,577 |
Decrease due to cost recognition on completed performance obligations |  |  | — |  |  |  | (606 | ) |  |  | — |
Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations |  |  | 2,291 |  |  |  | — |  |  |  | (22,443 | )
Other changes and FX impact |  |  | (2 | ) |  |  | (2 | ) |  |  | (50 | )
Ending balance as of June 30, 2024 |  | $ | 4,918 |  |  | $ | 4,034 |  |  | $ | 62,913 |
|  | Unbilled Accounts Receivable |  |  | Deferred Program Costs |  |  | Contract Liabilities |
Beginning balance as of March 31, 2023 |  | $ | 9,958 |  |  | $ | 2,136 |  |  | $ | 50,760 |
Increases for costs incurred to fulfill performance obligations |  |  | — |  |  |  | 1,084 |  |  |  | — |
Increase (decrease) due to customer billings |  |  | (9,479 | ) |  |  | — |  |  |  | 16,308 |
Decrease due to cost recognition on completed performance obligations |  |  | — |  |  |  | (1,234 | ) |  |  | — |
Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations |  |  | 5,092 |  |  |  | — |  |  |  | (8,974 | )
Other changes and FX impact |  |  | 1 |  |  |  | — |  |  |  | (11 | )
Ending balance as of June 30, 2023 |  | $ | 5,572 |  |  | $ | 1,986 |  |  | $ | 58,083 |
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] |
|  |  | Three Months Ended |
| Reportable |  | June 30, |
| Segment |  | 2024 |  |  | 2023 |
Inox Wind Limited | Wind |  |  | 18 | % |  |  | 12 | %

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