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Note 15 - Segment Reporting - Segment Reporting (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Revenues from external customers |  |  |  |  |  |  |  |  | $ 145,619 | $ 198,496
Revenue from Contract with Customer, Including Assessed Tax | $ 26,011 | $ 40,389 | $ 46,491 | $ 32,728 | $ 40,322 | $ 54,614 | $ 54,926 | $ 48,634 | 145,619 | 198,496
Operating loss | (3,975) | $ (1,997) | $ (2,311) | $ (4,311) | (1,818) | $ (475) | $ 1,035 | $ 1,680 | (12,594) | 422
Depreciation and amortization |  |  |  |  |  |  |  |  | 6,336 | 6,279
Capital expenditures |  |  |  |  |  |  |  |  | 1,707 | 1,547
Total assets | 118,047 |  |  |  | 119,682 |  |  |  | 118,047 | 119,682
Consolidation, Eliminations [Member] |  |  |  |  |  |  |  |  |  |
Revenues from external customers |  |  |  |  |  |  |  |  | 0 | 0
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | (360) | (137)
Operating loss |  |  |  |  |  |  |  |  | 0 | (8)
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0
Capital expenditures |  |  |  |  |  |  |  |  | 0 | 0
Total assets | (204,347) |  |  |  | (194,747) |  |  |  | (204,347) | (194,747)
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | 0 | 0
Heavy Fabrications [Member] |  |  |  |  |  |  |  |  |  |
Total assets | 37,131 |  |  |  | 40,438 |  |  |  | 37,131 | 40,438
Heavy Fabrications [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |
Revenues from external customers |  |  |  |  |  |  |  |  | 101,989 | 155,096
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | 101,994 | 155,198
Operating loss |  |  |  |  |  |  |  |  | (3,214) | 10,385
Depreciation and amortization |  |  |  |  |  |  |  |  | 3,844 | 3,736
Capital expenditures |  |  |  |  |  |  |  |  | 1,038 | 1,049
Heavy Fabrications [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | 5 | 102
Gearing [Member] |  |  |  |  |  |  |  |  |  |
Total assets | 46,219 |  |  |  | 43,319 |  |  |  | 46,219 | 43,319
Gearing [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |
Revenues from external customers |  |  |  |  |  |  |  |  | 28,583 | 25,104
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | 28,583 | 25,136
Operating loss |  |  |  |  |  |  |  |  | (2,593) | (3,883)
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,855 | 1,961
Capital expenditures |  |  |  |  |  |  |  |  | 328 | 283
Gearing [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | 0 | 32
Industrial Solutions [Member] |  |  |  |  |  |  |  |  |  |
Total assets | 10,825 |  |  |  | 10,244 |  |  |  | 10,825 | 10,244
Industrial Solutions [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |
Revenues from external customers |  |  |  |  |  |  |  |  | 15,047 | 18,296
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | 15,402 | 18,299
Operating loss |  |  |  |  |  |  |  |  | (386) | 881
Depreciation and amortization |  |  |  |  |  |  |  |  | 425 | 430
Capital expenditures |  |  |  |  |  |  |  |  | 261 | 159
Industrial Solutions [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | 355 | 3
Corporate Segment [Member] |  |  |  |  |  |  |  |  |  |
Total assets | $ 228,219 |  |  |  | $ 220,428 |  |  |  | 228,219 | 220,428
Corporate Segment [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |
Revenues from external customers |  |  |  |  |  |  |  |  | 0 | 0
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | 0 | 0
Operating loss |  |  |  |  |  |  |  |  | (6,401) | (6,953)
Depreciation and amortization |  |  |  |  |  |  |  |  | 212 | 152
Capital expenditures |  |  |  |  |  |  |  |  | 80 | 56
Corporate Segment [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | $ 0 | $ 0

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- Definition Amount of revenue from external customers for the reportable segment. Such disclosure is presented if the amount is: (a) included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References No definition available. + Details
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