Earnings Per Share (Details) - USD ($)	3 Months Ended
	Jun. 26, 2016	Jun. 28, 2015
Participating securities, Distributed and undistributed earnings
Participating securities (in shares)	0	68,900
Earnings per share - Basic
Net earnings	$ 80,500	$ 1,695,300
Less: Distributed and undistributed earnings allocated to nonvested stock	$ 0	(4,000)
Earnings available to common shareholders – Basic		$ 1,691,000
Weighted average common shares outstanding - Basic (in shares)	8,289,700	8,199,700
Basic earnings per share (in dollars per share)	$ 0.01	$ 0.21
Earnings per share - Diluted
Net earnings		$ 1,695,000
Less: Distributed and undistributed earnings allocated to nonvested stock	$ 0	(4,000)
Earnings available to common shareholders – Diluted		$ 1,691,000
Weighted average common shares outstanding - Basic (in shares)	8,289,700	8,199,700
Effect of dilutive options (in shares)	27,900	68,900
Diluted weighted-average common shares outstanding (in shares)	8,317,600	8,268,600
Diluted earnings per share (in dollars per share)	$ 0.01	$ 0.20
Stock Options
Earnings per share - Diluted
Anti-dilutive equity awards	80,000	0
Performance Stock Units
Earnings per share - Diluted
Anti-dilutive equity awards	0
Restricted Stock
Earnings per share - Diluted
Anti-dilutive equity awards	0