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Note 19 - Segment Geographic Information (Tables) | 12 Months Ended
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Sep. 30, 2023
Notes Tables |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | YEAR ENDED SEPTEMBER 30, |
|  | 2023 |  |  | 2022 |
Revenue: |  |  |  |  |  |  |  |
Oil and Gas Markets |  | $ | 73,993 |  |  | $ | 49,141 |
Adjacent Markets |  |  | 49,039 |  |  |  | 39,171 |
Emerging Markets |  |  | 1,234 |  |  |  | 711 |
Corporate |  |  | 243 |  |  |  | 230 |
Total |  |  | 124,509 |  |  |  | 89,253 |
Income (loss) from operations: |  |  |  |  |  |  |  |
Oil and Gas Markets |  |  | 15,759 |  |  |  | (7,539 | )
Adjacent Markets |  |  | 11,490 |  |  |  | 6,021 |
Emerging Markets |  |  | (4,003 | ) |  |  | (9,128 | )
Corporate |  |  | (11,918 | ) |  |  | (12,490 | )
Total |  |  | 11,328 |  |  |  | (23,136 | )
Depreciation and amortization expenses: |  |  |  |  |  |  |  |
Oil and Gas Markets |  |  | 14,428 |  |  |  | 16,947 |
Adjacent Markets |  |  | 703 |  |  |  | 743 |
Emerging Markets |  |  | 565 |  |  |  | 1,068 |
Corporate |  |  | 542 |  |  |  | 802 |
Total |  |  | 16,238 |  |  |  | 19,560 |
Impairment, inventory obsolescence and stock-based compensation expenses: |  |  |  |  |  |  |  |
Oil and Gas Markets |  |  | 2,329 |  |  |  | 3,612 |
Adjacent Markets |  |  | 656 |  |  |  | 932 |
Emerging Markets |  |  | 52 |  |  |  | 4,423 |
Corporate |  |  | 566 |  |  |  | 727 |
Total |  |  | 3,603 |  |  |  | 9,694 |
Interest income: |  |  |  |  |  |  |  |
Oil and Gas Markets |  |  | 352 |  |  |  | 850 |
Adjacent Markets |  |  | — |  |  |  | — |
Emerging Markets |  |  | — |  |  |  | — |
Corporate |  |  | 187 |  |  |  | 126 |
Total |  |  | 539 |  |  |  | 976 |
Interest expense: |  |  |  |  |  |  |  |
Oil and Gas Markets |  |  | 105 |  |  |  | 65 |
Adjacent Markets |  |  | — |  |  |  | — |
Emerging Markets |  |  | — |  |  |  | — |
Corporate |  |  | 29 |  |  |  | — |
Total |  |  | 134 |  |  |  | 65 |
Schedule of Revenue Generated by the Company's Subsidiaries [Table Text Block] |
|  | YEAR ENDED SEPTEMBER 30, |
|  | 2023 |  |  | 2022 |
United States |  | $ | 118,017 |  |  | $ | 82,332 |
Canada |  |  | 1,924 |  |  |  | 1,615 |
Russian Federation |  |  | 1,850 |  |  |  | 1,922 |
United Kingdom |  |  | 2,718 |  |  |  | 3,384 |
|  | $ | 124,509 |  |  | $ | 89,253 |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | YEAR ENDED SEPTEMBER 30, |
|  | 2023 |  |  | 2022 |
Asia (including Russian Federation) |  | $ | 26,685 |  |  | $ | 13,823 |
Canada |  |  | 2,703 |  |  |  | 1,225 |
Europe |  |  | 20,826 |  |  |  | 28,381 |
South America |  |  | 8,166 |  |  |  | 7,547 |
United States |  |  | 62,611 |  |  |  | 35,171 |
Other |  |  | 3,518 |  |  |  | 3,106 |
|  | $ | 124,509 |  |  | $ | 89,253 |
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] |
|  | AS OF SEPTEMBER 30, |
|  | 2023 |  |  | 2022 |
United States |  | $ | 75,321 |  |  | $ | 71,742 |
Canada |  |  | 575 |  |  |  | 1,459 |
Colombia |  |  | 442 |  |  |  | 449 |
Russian Federation |  |  | 543 |  |  |  | 1,010 |
United Kingdom |  |  | 383 |  |  |  | 422 |
China |  |  | — |  |  |  | 13 |
|  | $ | 77,264 |  |  | $ | 75,095 |

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