Summary of Significant Accounting Policies (Details Narrative) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Mar. 31, 2018	Mar. 31, 2017	[1]
Accounting Policies [Line Items]
Percentage of reserves for customers			100.00%
Foreign financial institutions actual deposits	$ 1,727,000		$ 1,727,000		$ 54,000
Future inventory returns	968,000		968,000		479,000
Inventory reserves	198,220		198,220		280,000
Reserve for sales returns	1,466,627	$ 2,504,710	1,466,627	$ 2,504,710	726,000	$ 600,000
Advertising expense	1,280,000	1,388,000	1,549,000	1,624,000
Accrued cooperative advertising allowances	755,000		755,000		$ 207,000
Research and development expense	21,000	39,000	$ 37,000	98,000
Federal income tax rate, percent			21.00%
Income tax, description			On December 22, 2017 the Tax Act was enacted which reduced the U.S. federal corporate tax rate from 35% to 21% effective January 1, 2018.
Effective income tax rate					28.00%
Deferred tax assets, gross	882,000		$ 882,000		$ 937,000
Income tax benifit	378,745	$ 422,290	$ 54,745	$ 140,369
Percentage of tax benefits recognized likelihood of being realized			greater than 50%
Potential dilutive shares amounted			2,350,000	2,450,000
Liability for return of goods					$ 247,000
Realizable value of estimated return of goods	$ 479,000		$ 479,000
March 31, 2019 [Member]
Accounting Policies [Line Items]
Effective income tax rate			23.00%
Minimum [Member]
Accounting Policies [Line Items]
Cooperative advertising allowance, percentage			1.00%
Maximum [Member]
Accounting Policies [Line Items]
Cooperative advertising allowance, percentage			13.00%

[1] The reserve for sales returns at the beginning of the period ended September 30, 2017 has beed adjusted to reflect the full retrospective adoption of ASC 606 effective April 1, 2018