Note 2 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Revenues	$ 143,136	$ 203,477
Consolidation, Eliminations [Member]
Revenues	(1,165)	(458)
Heavy Fabrications [Member] \| Operating Segments [Member]
Revenues	82,657	133,368
Gearing [Member] \| Operating Segments [Member]
Revenues	35,588	45,408
Industrial Solutions [Member] \| Operating Segments [Member]
Revenues	$ 26,056	$ 25,159

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.

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+ Details