Earnings Per Share - Continuing Operations (Details) - USD ($)	12 Months Ended
	Mar. 27, 2022	Mar. 28, 2021	Mar. 29, 2020
Earnings per share from continuing operations - Basic:
Net loss	$ (3,312,100)	$ (14,373,300)	$ (15,601,400)
Earnings available (loss attributable) to common shareholders - Basic	$ (3,312,000)	$ (14,373,000)	$ (15,601,000)
Weighted average common shares outstanding - Basic (in shares)	8,927,837	8,697,369	8,526,965
Earnings (loss) per common share from continuing operations - Basic (in dollars per share)	$ (0.37)	$ (1.65)	$ (1.83)
Diluted (loss) income per share
Net loss	$ (3,312,100)	$ (14,373,300)	$ (15,601,400)
Earnings available (loss attributable) to common shareholders - Diluted	$ (3,312,000)	$ (14,373,000)	$ (15,601,000)
Weighted average common shares outstanding - Basic (in shares)	8,927,837	8,697,369	8,526,965
Weighted average common shares outstanding - Diluted (in shares)	8,927,837	8,697,369	8,526,965
Loss per common share from continuing operations - Diluted (in dollars per share)	$ (0.37)	$ (1.65)	$ (1.83)
Options outstanding (in shares)	933,458
Anti-dilutive equity awards (in shares)	813,000	755,000	852,000
Stock Options
Diluted (loss) income per share
Options outstanding (in shares)	933,000	925,000	862,000
Anti-dilutive equity awards (in shares)	813,000	755,000	852,000
Performance Stock Units
Diluted (loss) income per share
Anti-dilutive equity awards (in shares)	0	0	0
RSUs
Diluted (loss) income per share
Anti-dilutive equity awards (in shares)	0	0	0