Note 12 - Net Income (Loss) Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021
Basic EPS Computation:
Net income	$ 2,131,400	$ 3,215,877
Weighted average common shares outstanding (in shares)	14,424,381	14,061,320
Basic EPS (in dollars per share)	$ 0.15	$ 0.23
Diluted EPS Computation:
Net income	$ 2,131,400	$ 3,215,877
Weighted average common shares outstanding (in shares)	14,424,381	14,061,320
Dilutive effect of stock options (in shares)	251,265	529,405
Total shares (in shares)	14,675,646	14,590,725
Diluted net income per share (in dollars per share)	$ 0.15	$ 0.22