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Note 4 - Discontinued Operations - Held for Sale and Discontinued Operations (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 21, 2023 | Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2023 | Oct. 31, 2022 | Jan. 31, 2023
Total current assets of discontinued operations |  | $ 0 |  | $ 0 |  | $ 5,783
Total liabilities of discontinued operations |  | 0 |  | 0 |  | 2,420
Net income (loss) from discontinued operations |  | 2,277 | $ (2,276) | 1,424 | $ (2,683) |
Klein Marine Services, Inc. [Member] |  |  |  |  |  |
Gain (Loss) on Disposition of Business | $ 2,400 | 2,393 |  | 2,393 | (0) |
Gain on sale of Klein | $ (2,400) | (2,393) |  | (2,393) | 0 |
Discontinued Operations, Held-for-Sale [Member] |  |  |  |  |  |
Accounts receivable, net |  |  |  |  |  | 746
Inventories, net |  |  |  |  |  | 4,292
Prepaid expenses and other current assets |  |  |  |  |  | 745
Total current assets of discontinued operations |  |  |  |  |  | 5,783
Property and equipment, net |  |  |  |  |  | 2,992
Intangible assets, net |  |  |  |  |  | 1,297
Total assets of discontinued operations |  |  |  |  |  | 10,072
Accounts payable |  |  |  |  |  | 1,607
Accrued and other liabilities |  |  |  |  |  | 813
Total liabilities of discontinued operations |  |  |  |  |  | $ 2,420
Revenue from discontinued operations |  | 140 | 1,847 | 3,318 | 6,543 |
Cost of discontinued operations |  | 11 | 1,230 | 1,982 | 3,981 |
Selling, general and administrative |  | 179 | 680 | 1,348 | 2,109 |
Research and development |  | 45 | 431 | 689 | 1,628 |
Depreciation and amortization |  | 18 | 136 | 324 | 402 |
Total operating expenses |  | 242 | 1,247 | 2,361 | 4,139 |
Operating loss |  | (113) | (630) | (1,025) | (1,577) |
Other income (expense) (Including $1,626 of currency translation loss for the three and nine months ended October 31, 2022.) |  | 2 | (1,646) | 73 | (1,106) |
Income (loss) before income taxes from discontinued operations |  | 2,282 | (2,276) | 1,441 | (2,683) |
Provision for income taxes from discontinued operations |  | (5) | 0 | (17) | 0 |
Net income (loss) from discontinued operations |  | 2,277 | (2,276) | 1,424 | (2,683) |
Gross profit from sale of assets held-for-sale |  |  |  | 0 | (382) |
Non-Cash cumulative translation adjustment for discontinued operations |  |  |  | 0 | 1,626 |
Sale of assets held for sale |  |  |  | 0 | 383 |
Discontinued Operations, Held-for-Sale [Member] | Klein Marine Services, Inc. [Member] |  |  |  |  |  |
Gain (Loss) on Disposition of Business |  | 2,393 | 0 | 2,393 | 0 |
Gain on sale of Klein |  | $ (2,393) | $ 0 | $ (2,393) | $ 0 |

X
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