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.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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PROPERTY, PLANT AND EQUIPMENT: (Details) - USD ($)	3 Months Ended		6 Months Ended
PROPERTY, PLANT AND EQUIPMENT: (Details) - USD ($)	Sep. 27, 2019	Sep. 28, 2018	Sep. 27, 2019	Sep. 28, 2018	Mar. 29, 2019
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 12,617,110		$ 12,617,110		$ 12,283,808
Less: accumulated depreciation and amortization	(10,183,154)		(10,183,154)		(9,723,201)
Property, Plant and Equipment, Net	2,433,956		2,433,956		2,560,607
Depreciation expense	223,333	$ 84,000	459,953	$ 225,600
Computers [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	512,420		512,420		502,723
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	969,253		969,253		934,648
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	6,825,097		6,825,097		6,657,875
Tools and dies [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	4,121,484		4,121,484		3,999,705
Furniture and fixture [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	179,071		179,071		179,072
Website development cost [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 9,785		$ 9,785		$ 9,785