Note 4 - Inventory - Inventory (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Raw materials and component parts	$ 3,762,339	$ 3,904,865
Work-in-process	4,434,122	3,949,647
Finished products	13,181,987	9,183,532
Total inventory	21,378,448	17,038,044
Less: inventory reserves	559,313	452,607
Net inventory	$ 20,819,135	$ 16,585,437

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount of valuation reserve for inventory.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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