(3) Inventories - Inventories Current (Details) - USD ($)	Dec. 26, 2020	Dec. 28, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 752,760	$ 778,409
Work in process	2,800,226	1,898,916
Finished goods	592,640	871,861
Gross Inventory	4,145,626	3,549,186
Reserve for obsolescence	(436,155)	(449,362)
Total	$ 3,709,471	$ 3,099,824

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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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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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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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