Accrued expenses and other current liabilities - (Details) - USD ($)	Apr. 01, 2018	Mar. 26, 2017
Accrued expenses and other current liabilities
Deferred Revenue	$ 58,400	$ 635,100
Other Accrued Expenses	1,311,900	1,593,100
Total Accrued Expenses	$ 1,370,300	$ 2,228,200