Reserve for Sales Return - Schedule of Valuation and Qualifying Accounts (Details) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Reserve for sales returns at beginning of the year	$ 726,000	$ 600,000	[1]
Provision for estimated sales returns	186,878	318,108
Sales returns received	(775,342)	(656,899)
Reserve for sales returns at end of the period	$ 137,536	$ 600,000

[1] The reserve for sales returns at the beginning of June 30, 2017 has been adjusted to reflect the full retrospective adoption of ASC 606 effective April 1, 2018.