Note 5 - Goodwill and Other Intangible Assets (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill, Impairment Loss		$ 0
Goodwill, Period Increase (Decrease)	$ 2,100,000	200,000
Goodwill	18,547,704	16,453,049	$ 16,231,938
Goodwill, Acquired During Period	$ 2,094,655	0
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	1 year
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years
Industrial and Transportation Products [Member]
Goodwill	$ 18,069,448	15,974,793	$ 15,753,682
Goodwill, Acquired During Period	$ 2,094,655	$ 0