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Note 15 - Segment Reporting - Segment Reporting (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Revenues from external customers | $ 35,503 | $ 57,163 | $ 109,571 | $ 156,879 |
Revenue from Contract with Customer, Including Assessed Tax | 35,503 | 57,163 | 109,571 | 156,879 |
Operating income (loss) | 1,178 | 5,367 | 4,513 | 8,865 |
Depreciation and amortization | 1,671 | 1,605 | 4,986 | 4,772 |
Capital expenditures | 745 | 1,338 | 3,279 | 5,315 |
Total assets | 125,124 |  | 125,124 |  | $ 135,156
Operating Segments [Member] | Heavy Fabrications [Member] |  |  |  |  |
Revenues from external customers | 20,600 | 38,326 | 62,228 | 103,864 |
Revenue from Contract with Customer, Including Assessed Tax | 20,600 | 38,326 | 62,228 | 103,864 |
Operating income (loss) | 2,230 | 5,791 | 5,832 | 12,448 |
Depreciation and amortization | 999 | 896 | 2,932 | 2,610 |
Capital expenditures | 588 | 1,098 | 1,419 | 3,916 |
Total assets | 44,253 |  | 44,253 |  | 46,931
Operating Segments [Member] | Gearing [Member] |  |  |  |  |
Revenues from external customers | 9,167 | 11,404 | 27,958 | 34,347 |
Revenue from Contract with Customer, Including Assessed Tax | 9,167 | 11,404 | 27,958 | 34,347 |
Operating income (loss) | (78) | 265 | 429 | 1,194 |
Depreciation and amortization | 534 | 563 | 1,627 | 1,715 |
Capital expenditures | 123 | 190 | 1,471 | 1,314 |
Total assets | 44,796 |  | 44,796 |  | 48,599
Operating Segments [Member] | Industrial Solutions [Member] |  |  |  |  |
Revenues from external customers | 5,736 | 7,433 | 19,385 | 18,668 |
Revenue from Contract with Customer, Including Assessed Tax | 5,737 | 7,434 | 20,193 | 19,125 |
Operating income (loss) | 462 | 846 | 2,852 | 2,311 |
Depreciation and amortization | 109 | 94 | 315 | 280 |
Capital expenditures | 24 | 31 | 362 | 49 |
Total assets | 14,576 |  | 14,576 |  | 16,295
Operating Segments [Member] | Corporate Segment [Member] |  |  |  |  |
Revenues from external customers | 0 | 0 | 0 | 0 |
Revenue from Contract with Customer, Including Assessed Tax | 0 | 0 | 0 | 0 |
Operating income (loss) | (1,436) | (1,535) | (4,600) | (7,091) |
Depreciation and amortization | 29 | 52 | 112 | 167 |
Capital expenditures | 10 | 19 | 27 | 36 |
Total assets | 57,784 |  | 57,784 |  | 58,487
Consolidation, Eliminations [Member] |  |  |  |  |
Revenues from external customers | 0 | 0 | 0 | 0 |
Revenue from Contract with Customer, Including Assessed Tax | (1) | (1) | (808) | (457) |
Operating income (loss) | 0 | 0 | 0 | 3 |
Depreciation and amortization | 0 | 0 | 0 | 0 |
Capital expenditures | 0 | 0 | 0 | 0 |
Total assets | (36,285) |  | (36,285) |  | $ (35,156)
Intersegment Eliminations [Member] |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | (1) | (1) | (808) | (457) |
Intersegment Eliminations [Member] | Heavy Fabrications [Member] |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | 0 | 0 | 0 | 0 |
Intersegment Eliminations [Member] | Gearing [Member] |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | 0 | 0 | 0 | 0 |
Intersegment Eliminations [Member] | Industrial Solutions [Member] |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | 1 | 1 | 808 | 457 |
Intersegment Eliminations [Member] | Corporate Segment [Member] |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 0 | $ 0 | $ 0 | $ 0 |

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