Note 2 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Revenues	$ 34,057	$ 36,838	$ 36,838
Consolidation, Eliminations [Member]
Revenues	0	(23)	(23)
Heavy Fabrications [Member] \| Operating Segments [Member]
Revenues	16,367	25,248	25,248
Gearing [Member] \| Operating Segments [Member]
Revenues	8,454	5,966	5,966
Industrial Solutions [Member] \| Operating Segments [Member]
Revenues	$ 9,236	$ 5,647	$ 5,647

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details