Income Taxes - Deferred Taxes (Details) - USD ($)	Apr. 01, 2018	Mar. 26, 2017
Net deferred tax assets (liabilities)
Deferred compensation	$ 160,600	$ 142,600
Accrued vacation	340,200	566,900
Deferred rent	37,200	208,900
Allowance for doubtful accounts	249,700	259,300
Inventory reserves	1,414,600	2,338,800
Sales tax reserves	217,500	366,000
Other assets	1,364,900	800,000
Tax contingency reserve	83,400	215,800
Depreciation and amortization	(2,542,800)	(3,659,100)
Other liabilities		(461,600)
Accrued compensation		(286,300)
Prepaid expenses	(614,800)	(878,100)
Net Deferred Tax Assets	710,500
Net Deferred Tax Liabilities		(386,800)
Valuation allowance	$ 0	$ 0