PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)	Sep. 29, 2017	Mar. 31, 2017
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 11,299,374	$ 11,066,474
Less: accumulated depreciation and amortization	(9,259,924)	(9,047,324)
Property, Plant and Equipment, Net	2,039,450	2,019,150
Computers [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	485,014	444,184
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	888,488	878,888
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	6,123,645	6,079,401
Tools and dies [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,614,106	3,484,307
Furniture and fixture [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	179,071	170,644
Website development cost [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 9,050	$ 9,050