Summary of Significant Accounting Policies - FY, Allowance for Doubtful Accounts and Inventory (Details) - USD ($)	12 Months Ended
	Mar. 26, 2017	Mar. 27, 2016	Mar. 29, 2015
Fiscal Year
Fiscal year duration	364 days	364 days	364 days
Allowance for Doubtful Accounts
Payment period from large majority of commercial customers	30 days
Product Inventory
Reserves for excess or obsolescence inventory	$ 6,360,600	$ 6,071,100
Minimum
Fiscal Year
Fiscal year duration	364 days
Maximum
Fiscal Year
Fiscal year duration	371 days