Note 12 - Net Income (Loss) Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($)	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020
Basic EPS Computation:
Net income (loss)	$ 3,215,877	$ 908,064
Weighted average common shares outstanding (in shares)	14,061,320	13,251,521
Basic EPS (in dollars per share)	$ 0.23	$ 0.07
Diluted EPS Computation:
Net income (loss)	$ 3,215,877	$ 908,064
Weighted average common shares outstanding (in shares)	14,061,320	13,251,521
Dilutive effect of stock options (in shares)	529,405	97,061
Total shares (in shares)	14,590,725	13,348,582
Diluted net income (loss) per share (in dollars per share)	$ 0.22	$ 0.07