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Note 14 - Segment Information - Summary of Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2023 | Mar. 31, 2022
Revenue from Contract with Customer, Excluding Assessed Tax | $ 31,370 | $ 24,700 | $ 62,479 | $ 42,691
Income (loss) from operations | 4,377 | (1,649) | 4,098 | (8,535)
Corporate, Non-Segment [Member] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 52 | 52 | 98 | 81
Income (loss) from operations | (1,847) | (3,213) | (5,066) | (6,317)
Oil and Gas Markets [Member] | Operating Segments [Member] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 18,419 | 15,146 | 38,567 | 24,800
Income (loss) from operations | 4,176 | 1,656 | 6,582 | (2,514)
Adjacent Markets [Member] | Operating Segments [Member] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 12,708 | 9,203 | 23,530 | 17,374
Income (loss) from operations | 3,055 | 1,292 | 4,802 | 2,500
Emerging Markets [Member] | Operating Segments [Member] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 191 | 299 | 284 | 436
Income (loss) from operations | $ (1,007) | $ (1,384) | $ (2,220) | $ (2,204)

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