Income Taxes - Unrecognized Tax Benefits (Details) - USD ($)	9 Months Ended		12 Months Ended
	Dec. 25, 2016	Dec. 27, 2015	Mar. 27, 2016	Dec. 25, 2016	Mar. 27, 2016
Income Taxes
Gross amount of unrecognized tax benefits	$ 290,400		$ 290,400	$ 223,100	$ 290,400
Unrecognized tax benefits, net of federal benefit	147,200		188,800
Amount of interest and penalties expense (benefit) related to tax uncertainties recognized, net of federal expense/benefit	9,000	$ 2,000
Cumulative amount of interest and penalties related to tax uncertainties, net of federal expense/benefit				$ 346,200	$ 339,800
Reconciliation of unrecognized tax benefit amounts
Beginning balance of unrecognized tax benefit	290,400
Increases related to current period tax positions	2,200
Reductions as a result of a lapse in the applicable statute of limitations	(69,500)
Ending balance of unrecognized tax benefits	$ 223,100		$ 290,400