Summary of Significant Accounting Policies - FY, Allowance for Doubtful Accounts and Inventory (Details) - USD ($)	12 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Apr. 01, 2018
Fiscal Year
Fiscal year duration	364 days	364 days	371 days
Allowance for Doubtful Accounts
Payment period from large majority of commercial customers	30 days
Allowance for doubtful accounts	$ 3,288,800	$ 2,137,900
Product Inventory
Reserves for excess or obsolescence inventory	9,666,100	$ 5,870,600
COVID-19 pandemic
Allowance for Doubtful Accounts
Allowance for doubtful accounts	1,500,000
Product Inventory
Reserves for excess or obsolescence inventory	$ 3,900,000
Minimum
Fiscal Year
Fiscal year duration	364 days
Maximum
Fiscal Year
Fiscal year duration	371 days