Reserve for Sales Returns - Schedule of Reserve for Sales Returns (Details) - USD ($)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
First Priority Lien Percentage
Reserve for sales returns at beginning of the year	$ 1,224,000	$ 896,000
Provision for estimated sales returns	3,881,000	5,771,000
Sales returns received	(4,145,000)	(5,443,000)
Reserve for sales returns at end of the period	$ 960,000	$ 1,224,000