Earnings Per Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Mar. 26, 2017	Dec. 25, 2016	Sep. 25, 2016	Jun. 26, 2016	Mar. 27, 2016	Dec. 27, 2015	Sep. 27, 2015	Jun. 28, 2015	Mar. 26, 2017	Mar. 27, 2016	Mar. 29, 2015
Earnings per share - Basic
Net earnings	$ (857,300)	$ 1,227,700	$ 994,200	$ 80,500	$ (1,989,800)	$ 2,886,700	$ 2,748,300	$ 1,695,300	$ 1,445,100	$ 5,340,500	$ 8,634,300
Less: Distributed and undistributed earnings allocated to nonvested stock										(15,000)	(47,000)
Earnings available to common shareholders - Basic									$ 1,445,000	$ 5,326,000	$ 8,587,000
Weighted average common shares outstanding - Basic (in shares)									8,312,731	8,220,023	8,171,235
Basic earnings per share (in dollars per share)									$ 0.17	$ 0.65	$ 1.05
Earnings per share - Diluted
Net earnings	$ (857,300)	$ 1,227,700	$ 994,200	$ 80,500	$ (1,989,800)	$ 2,886,700	$ 2,748,300	$ 1,695,300	$ 1,445,100	$ 5,340,500	$ 8,634,300
Less: Distributed and undistributed earnings allocated to nonvested stock										(1,000)	(19,000)
Earnings available to common shareholders – Diluted									$ 1,445,000	$ 5,340,000	$ 8,615,000
Weighted average common shares outstanding - Basic (in shares)									8,312,731	8,220,023	8,171,235
Effect of dilutive options (in shares)									27,686		101,571
Diluted weighted-average common shares outstanding (in shares)									8,340,417	8,220,023	8,272,806
Diluted earnings per share (in dollars per share)	$ (0.10)	$ 0.15	$ 0.12	$ 0.01	$ (0.24)	$ 0.35	$ 0.33	$ 0.20	$ 0.17	$ 0.65	$ 1.04
Anti-dilutive equity awards (in shares)									60,000	100,000
Stock Options
Earnings per share - Diluted
Anti-dilutive equity awards (in shares)											0
Options outstanding (in shares)	420,000				100,000				420,000	100,000
Performance Stock Units
Earnings per share - Diluted
Anti-dilutive equity awards (in shares)									0	0	0
Restricted Stock
Earnings per share - Diluted
Anti-dilutive equity awards (in shares)									0	0	0