Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
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	$ 0	175,698		0	0	$ 175,698
Employee option exercises (in shares)	141,001					141,001
Employee option exercises	$ 1,410	249,245		0	(209,290)	$ 41,365
Net loss	$ 0	0		1,230,785	0	1,230,785
Balance (in shares) at Sep. 30, 2023	14,601,487
Balance at Sep. 30, 2023	$ 146,015	40,151,794		(22,894,307)	(250,138)	17,153,364
Balance (in shares) at Jul. 01, 2023	14,546,487
Share-based compensation expense	$ 0	27,941		0	0	$ 27,941
Employee option exercises (in shares)	55,000					55,000
Employee option exercises	$ 550	145,400		0	(138,200)	$ 7,750
Net loss	0	0		171,081	0	171,081
Balance at Jul. 01, 2023	$ 145,465	39,978,453		(23,065,388)	(111,938)	16,946,592
Balance (in shares) at Sep. 30, 2023	14,601,487
Balance at Sep. 30, 2023	$ 146,015	40,151,794		(22,894,307)	(250,138)	17,153,364
Balance (in shares) at Dec. 30, 2023	14,601,487
Balance at Dec. 30, 2023	$ 146,015	40,180,893		(22,754,796)	$ (250,138)	17,321,974
Share-based compensation expense		249,922				$ 249,922
Employee option exercises (in shares)	60,000				(90,000)	60,000
Employee option exercises	$ 600	89,400
Other comprehensive income			$ 17,446			$ 17,446
Net loss				(2,140,297)		(2,140,297)
Balance at Dec. 30, 2023						21,602,116
Balance (in shares) at Sep. 28, 2024	14,661,487
Balance at Sep. 28, 2024	$ 146,615	40,520,215	17,446	(24,895,093)	$ (340,138)	15,449,045
Balance (in shares) at Jun. 29, 2024	14,601,487
Balance at Jun. 29, 2024	$ 146,015	40,386,335	8,701	(23,852,254)	$ (250,138)	16,438,659
Share-based compensation expense		44,480				$ 44,480
Employee option exercises (in shares)	60,000				(90,000)	60,000
Employee option exercises	$ 600	89,400
Other comprehensive income			8,745			$ 8,745
Net loss				(1,042,839)		(1,042,839)
Balance (in shares) at Sep. 28, 2024	14,661,487
Balance at Sep. 28, 2024	$ 146,615	$ 40,520,215	$ 17,446	$ (24,895,093)	$ (340,138)	$ 15,449,045