Earnings Per Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Mar. 27, 2016	Dec. 27, 2015	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 27, 2016	Mar. 29, 2015	Mar. 30, 2014
Earnings per share - Basic
Net earnings	$ (1,989,800)	$ 2,886,700	$ 2,748,300	$ 1,695,300	$ (231,900)	$ 1,681,200	$ 3,513,600	$ 3,671,400	$ 5,340,500	$ 8,634,300	$ 16,249,100
Less: Distributed and undistributed earnings allocated to nonvested stock									(15,000)	(47,000)	(134,000)
Earnings available to common shareholders - Basic									$ 5,326,000	$ 8,587,000	$ 16,115,000
Weighted average common shares outstanding - Basic (in shares)									8,220,000	8,171,000	8,134,000
Basic earnings per share (in dollars per share)									$ 0.65	$ 1.05	$ 1.98
Earnings per share - Diluted
Net earnings	$ (1,989,800)	$ 2,886,700	$ 2,748,300	$ 1,695,300	$ (231,900)	$ 1,681,200	$ 3,513,600	$ 3,671,400	$ 5,340,500	$ 8,634,300	$ 16,249,100
Less: Distributed and undistributed earnings allocated to nonvested stock									(1,000)	(19,000)	(132,000)
Earnings available to common shareholders – Diluted									$ 5,340,000	$ 8,615,000	$ 16,117,000
Weighted average common shares outstanding - Basic (in shares)									8,220,000	8,171,000	8,134,000
Effect of dilutive options (in shares)										102,000	192,000
Weighted average common shares outstanding – Diluted (in shares)									8,220,000	8,273,000	8,326,000
Diluted earnings per share (in dollars per share)	$ (0.24)	$ 0.35	$ 0.33	$ 0.20	$ (0.03)	$ 0.20	$ 0.42	$ 0.44	$ 0.65	$ 1.04	$ 1.94
Anti-dilutive equity awards									100,000
Stock Options
Earnings per share - Diluted
Anti-dilutive equity awards									100,000	0	0
Performance Stock Units
Earnings per share - Diluted
Anti-dilutive equity awards									0	0	0
Restricted Stock
Earnings per share - Diluted
Anti-dilutive equity awards									0	0	0