(6) Inventories - Inventories consist of the following (Details) - USD ($)	Sep. 26, 2020	Dec. 28, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 968,182	$ 778,409
Work in process	1,865,505	1,898,916
Finished goods	1,789,740	871,861
Total inventory	4,623,427	3,549,186
Reserve for obsolescence	(436,155)	(449,362)
Inventories, net	$ 4,187,272	$ 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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