Property and Equipment, Net - Summary of Property and Equipment (Details) - USD ($)	9 Months Ended
	Dec. 31, 2018	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,672,403	$ 3,412,714
Accumulated depreciation	(3,089,969)	(2,962,409)
Property and equipment, net	$ 582,434	450,305
Computer and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Average useful life (in years)	5 years
Property and equipment, gross	$ 286,928	286,928
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Average useful life (in years)	7 years
Property and equipment, gross	$ 98,410	98,410
Warehouse Equipment [Member]
Property, Plant and Equipment [Line Items]
Average useful life (in years)	7 years
Property and equipment, gross	$ 209,419	238,471
Molds and Tooling [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,077,646	$ 2,788,905
Molds and Tooling [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Average useful life (in years)	3 years
Molds and Tooling [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Average useful life (in years)	5 years