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v3.23.1

Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2023 | Mar. 31, 2022
Total revenue | $ 31,370 | $ 24,700 | $ 62,479 | $ 42,691
Product [Member] |  |  |  |
Total revenue | 17,701 | 21,565 | 37,249 | 34,597
Operating Segments [Member] | Oil and Gas Markets [Member] |  |  |  |
Total revenue | 18,419 | 15,146 | 38,567 | 24,800
Operating Segments [Member] | Oil and Gas Markets [Member] | Traditional Exploration Product Revenue [Member] |  |  |  |
Total revenue | 3,296 | 1,217 | 6,051 | 1,797
Operating Segments [Member] | Oil and Gas Markets [Member] | Wireless Exploration Product Revenue [Member] |  |  |  |
Total revenue | 1,411 | 10,500 | 7,170 | 14,258
Operating Segments [Member] | Oil and Gas Markets [Member] | Reservoir Product Revenue [Member] |  |  |  |
Total revenue | 132 | 394 | 287 | 821
Operating Segments [Member] | Oil and Gas Markets [Member] | Product [Member] |  |  |  |
Total revenue | 4,839 | 12,111 | 13,508 | 16,876
Operating Segments [Member] | Adjacent Markets [Member] |  |  |  |
Total revenue | 12,708 | 9,203 | 23,530 | 17,374
Operating Segments [Member] | Adjacent Markets [Member] | Product [Member] |  |  |  |
Total revenue | 12,671 | 9,155 | 23,457 | 17,285
Operating Segments [Member] | Adjacent Markets [Member] | Industrial Product [Member] |  |  |  |
Total revenue | 9,642 | 5,993 | 17,572 | 11,006
Operating Segments [Member] | Adjacent Markets [Member] | Imaging Products [Member] |  |  |  |
Total revenue | 3,029 | 3,162 | 5,885 | 6,279
Operating Segments [Member] | Emerging Markets [Member] |  |  |  |
Total revenue | 191 | 299 | 284 | 436
Operating Segments [Member] | Emerging Markets [Member] | Product [Member] |  |  |  |
Total revenue | $ 191 | $ 299 | $ 284 | $ 436

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