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Note 11 - Business Segment Information - Net Sales from External Customers by Product Category (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net sales	$ 659,511	$ 521,027	$ 378,316
Industrial [Member]
Net sales	136,978	100,826	61,371
Fire 1 [Member]
Net sales	143,551	121,001	103,653
Agriculture [Member]
Net sales	83,053	57,703	21,879
Construction 1 [Member]
Net sales	86,996	60,557	34,368
Municipal [Member]
Net sales	78,528	69,726	54,964
Petroleum [Member]
Net sales	23,168	16,464	15,618
OEM [Member]
Net sales	37,708	34,820	32,964
Repairs and Other [Member]
Net sales	$ 69,529	$ 59,930	$ 53,499

X

- Definition

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.

+ References

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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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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