Property and Equipment - (Details) - USD ($)	12 Months Ended
Mar. 31, 2019	Apr. 01, 2018	Mar. 26, 2017
Property and Equipment
Property and equipment, gross	$ 40,276,400	$ 38,195,100
Less: Accumulated depreciation and amortization	(25,272,900)	(24,532,300)
Property and equipment, net	15,003,500	13,662,800
Depreciation and amortization	3,618,900	3,992,600	$ 4,238,900
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	20,926,500	20,896,300
Information technology equipment
Property and Equipment
Property and equipment, gross	6,026,300	4,988,600
Furniture, telephone system, equipment and tooling
Property and Equipment
Property and equipment, gross	$ 8,582,800	$ 7,569,400

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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- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

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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.

+ References

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