Property and Equipment - (Details) - USD ($)	12 Months Ended
Mar. 28, 2021	Mar. 29, 2020	Mar. 31, 2019
Property and Equipment
Property and equipment, gross	$ 39,919,700	$ 39,956,600
Less accumulated depreciation	(27,348,100)	(26,522,900)
Property and equipment, net	12,571,600	13,433,700
Depreciation	1,667,500	1,683,000	$ 1,507,300
Land
Property and Equipment
Property and equipment, gross	4,740,800	4,740,800
Building, building improvements and leasehold improvements
Property and Equipment
Property and equipment, gross	21,265,400	20,921,800
Information technology equipment
Property and Equipment
Property and equipment, gross	5,003,000	5,255,000
Furniture, telephone system, equipment and tooling
Property and Equipment
Property and equipment, gross	$ 8,910,500	$ 9,039,000

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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