Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Dec. 26, 2020	13,746,242
Balance at Dec. 26, 2020	$ 137,462	$ 36,688,894	$ (29,472,368)	$ (996,323)	$ 6,357,665
Share-based compensation expense		147,652			147,652
Issuance of common stock (net of costs)	$ (5,268)	(3,417,102)			(3,422,370)
Employee option exercises (in shares)	630,400
Employee option exercises	$ 6,304	1,235,370		(1,230,445)	11,229
Net income			2,998,067		2,998,067
Treasury shares (in shares)	(554,660)
Treasury shares	$ (5,547)	(2,218,706)		2,224,253
Issuance of common stock (net of costs) (in shares)	526,804
Issuance of common stock (net of costs)	$ 5,268	3,417,102			3,422,370
Balance (in shares) at Sep. 25, 2021	14,348,786
Balance at Sep. 25, 2021	$ 143,487	39,270,312	(26,474,301)	(2,515)	12,936,983
Balance (in shares) at Jun. 26, 2021	14,300,771
Balance at Jun. 26, 2021	$ 143,007	38,956,952	(29,202,268)	(1,770)	9,895,921
Share-based compensation expense		28,117			28,117
Issuance of common stock (net of costs)	$ (475)	(284,503)			$ (284,978)
Employee option exercises (in shares)	500				500
Employee option exercises	$ 5	740		(745)	$ 0
Net income			2,727,967		2,727,967
Issuance of common stock (net of costs) (in shares)	47,515
Issuance of common stock (net of costs)	$ 475	284,503			284,978
Balance (in shares) at Sep. 25, 2021	14,348,786
Balance at Sep. 25, 2021	$ 143,487	39,270,312	(26,474,301)	(2,515)	12,936,983
Balance (in shares) at Dec. 25, 2021	14,350,786
Balance at Dec. 25, 2021	$ 143,508	39,281,810	(26,256,492)	(2,515)	13,166,311
Share-based compensation expense		207,277			207,277
Issuance of common stock (net of costs)		(40,893)			(40,893)
Employee option exercises (in shares)	88,000
Employee option exercises	$ 880	172,178		(18,334)	154,724
Net income			1,862,409		1,862,409
Treasury shares (in shares)	0
Treasury shares	$ 0	0	0	0	0
Issuance of common stock (net of costs)		40,893			40,893
Balance (in shares) at Oct. 01, 2022	14,438,786
Balance at Oct. 01, 2022	$ 144,388	39,620,372	(24,394,083)	(20,849)	15,349,828
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
Share-based compensation expense		43,422			43,422
Issuance of common stock (net of costs)		(23,135)			$ (23,135)
Employee option exercises (in shares)	0				0
Employee option exercises	$ 0	0		0	$ 0
Net income			987,865		987,865
Issuance of common stock (net of costs)		23,135			23,135
Balance (in shares) at Oct. 01, 2022	14,438,786
Balance at Oct. 01, 2022	$ 144,388	$ 39,620,372	$ (24,394,083)	$ (20,849)	$ 15,349,828