Property and Equipment - (Details) - USD ($)	12 Months Ended
Mar. 29, 2020	Mar. 31, 2019	Apr. 01, 2018
Property and Equipment
Property and equipment, gross	$ 39,956,600	$ 40,276,400
Less: Accumulated depreciation and amortization	(26,522,900)	(25,272,900)
Property and equipment, net	13,433,700	15,003,500
Depreciation	1,683,000	1,507,300	$ 1,796,500
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	20,921,800	20,926,500
Information technology equipment
Property and Equipment
Property and equipment, gross	5,255,000	6,026,300
Furniture, telephone system, equipment and tooling
Property and Equipment
Property and equipment, gross	$ 9,039,000	$ 8,582,800

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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