Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Apr. 02, 2022	14,423,486
Balance at Apr. 02, 2022	$ 144,235	$ 39,546,975	$ (25,837,056)	$ (5,623)	$ 13,848,531
Share-based compensation expense		39,384			$ 39,384
Employee option exercises (in shares)	15,300				15,300
Employee option exercises	$ 153	21,870		(15,226)	$ 6,797
Net income (loss)			455,108		455,108
Issuance of common stock		(8,144)			(8,144)
Balance (in shares) at Jul. 02, 2022	14,438,786
Balance at Jul. 02, 2022	$ 144,388	39,600,085	(25,381,948)	(20,849)	14,341,676
Balance (in shares) at Dec. 25, 2022	14,350,786
Balance at Dec. 25, 2022	$ 143,508	39,281,810	(26,256,492)	(2,515)	13,166,311
Share-based compensation expense		163,855			163,855
Employee option exercises (in shares)	88,000
Employee option exercises	$ 880	172,178		(18,334)	154,724
Net income (loss)			874,544		874,544
Issuance of common stock		(17,758)			(17,758)
Balance (in shares) at Jul. 02, 2023	14,438,786
Balance at Jul. 02, 2023	$ 144,388	39,600,085	(25,381,948)	(20,849)	14,341,676
Balance (in shares) at Dec. 31, 2022	14,460,486
Balance at Dec. 31, 2022	$ 144,605	39,726,851	(24,125,092)	(40,848)	15,705,516
Share-based compensation expense		147,757			$ 147,757
Employee option exercises (in shares)	86,001				86,000
Employee option exercises	$ 860	103,845		(71,090)	$ 33,615
Net income (loss)			1,059,704		1,059,704
Balance (in shares) at Jul. 01, 2023	14,546,487
Balance at Jul. 01, 2023	$ 145,465	39,978,453	(23,065,388)	(111,938)	16,946,592
Balance (in shares) at Apr. 01, 2023	14,467,487
Balance at Apr. 01, 2023	$ 144,675	39,867,507	(23,665,891)	(41,638)	16,304,653
Share-based compensation expense		17,316			$ 17,316
Employee option exercises (in shares)	79,000				79,000
Employee option exercises	$ 790	93,630		(70,300)	$ 24,120
Net income (loss)			600,503		600,503
Balance (in shares) at Jul. 01, 2023	14,546,487
Balance at Jul. 01, 2023	$ 145,465	$ 39,978,453	$ (23,065,388)	$ (111,938)	$ 16,946,592