Summary of Accounting Policies (Details Narrative) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Mar. 31, 2019	Mar. 31, 2018
Accounting Policies [Line Items]
Percentage of reserves for customers			100.00%
Foreign financial institutions actual deposits	$ 2,134,000		$ 2,134,000		$ 211,000
Future inventory returns	1,857,000		1,857,000		599,000
Inventory reserves	254,000		254,000		254,000
Reserve for sales returns	3,230,645	$ 1,466,627	3,230,645	$ 1,466,627	896,154	$ 726,000
Stock option expense	5,000	10,000	10,000	21,000
Advertising expense	1,419,000	1,280,000	1,780,000	1,549,000
Accrued cooperative advertising allowances	664,000		664,000		185,000
Research and development costs	18,000	21,000	$ 23,000	$ 37,000
Effective tax rate			18.00%	23.00%
Net deferred tax assets	813,000		$ 813,000		$ 758,000
Income Tax (provision) benefit	$ (184,140)	$ (378,745)	$ 54,591	$ (54,745)
Percentage of tax benefits recognized likelihood of being realized			greater than 50%
Total potential dilutive shares from common stock options			2,250,000	2,350,000
Minimum [Member]
Accounting Policies [Line Items]
Cooperative advertising allowance, percentage			1.00%
Maximum [Member]
Accounting Policies [Line Items]
Cooperative advertising allowance, percentage			13.00%