CONSOLIDATED CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT) - USD ($)	Common Stock	Retained Earnings (Accumulated Deficit).	Total
BALANCE at Dec. 25, 2021		$ (39,083,400)	$ (39,083,400)
BALANCE (in shares) at Dec. 25, 2021	3,635,806
Shareholders' Equity (Deficit)
Repurchase of common stock	$ (1,679,900)	(34,911,500)	(36,591,400)
Repurchase of common stock (in shares)	(164,586)
Stock options exercised	$ 1,258,300		1,258,300
Stock options exercised (in shares)	9,156
Compensation expense relating to stock options	$ 421,600		421,600
Cash dividends		(1,625,300)	(1,625,300)
Comprehensive income (Net income)		9,852,500	9,852,500
BALANCE at Mar. 26, 2022		(65,767,700)	(65,767,700)
BALANCE (in shares) at Mar. 26, 2022	3,480,376
Shareholders' Equity (Deficit)
Repurchase of common stock	$ (1,645,200)	(9,610,900)	(11,256,100)
Repurchase of common stock (in shares)	(55,694)
Stock options exercised	$ 1,295,400		1,295,400
Stock options exercised (in shares)	13,124
Compensation expense relating to stock options	$ 349,800		349,800
Cash dividends		(2,427,300)	(2,427,300)
Comprehensive income (Net income)		9,027,200	9,027,200
BALANCE at Jun. 25, 2022		(68,778,700)	(68,778,700)
BALANCE (in shares) at Jun. 25, 2022	3,437,806
Shareholders' Equity (Deficit)
Repurchase of common stock	$ (433,700)		(433,700)
Repurchase of common stock (in shares)	(2,027)
Stock options exercised	$ 383,400		383,400
Stock options exercised (in shares)	4,053
Compensation expense relating to stock options	$ 432,400		432,400
Cash dividends		(2,407,100)	(2,407,100)
Comprehensive income (Net income)		10,368,600	10,368,600
BALANCE at Sep. 24, 2022	$ 382,100	(60,817,200)	(60,435,100)
BALANCE (in shares) at Sep. 24, 2022	3,439,832
BALANCE at Dec. 31, 2022	$ 1,806,700	(63,438,800)	$ (61,632,100)
BALANCE (in shares) at Dec. 31, 2022	3,459,673		3,459,673
Shareholders' Equity (Deficit)
Stock options exercised	$ 590,400		$ 590,400
Stock options exercised (in shares)	3,518
Compensation expense relating to stock options	$ 475,900		475,900
Cash dividends		(2,421,900)	(2,421,900)
Comprehensive income (Net income)		8,942,700	8,942,700
BALANCE at Apr. 01, 2023	$ 2,873,000	(56,918,000)	(54,045,000)
BALANCE (in shares) at Apr. 01, 2023	3,463,191
BALANCE at Dec. 31, 2022	$ 1,806,700	(63,438,800)	$ (61,632,100)
BALANCE (in shares) at Dec. 31, 2022	3,459,673		3,459,673
BALANCE at Sep. 30, 2023	$ 6,411,900	(40,975,400)	$ (34,563,500)
BALANCE (in shares) at Sep. 30, 2023	3,486,869		3,486,869
BALANCE at Apr. 01, 2023	$ 2,873,000	(56,918,000)	$ (54,045,000)
BALANCE (in shares) at Apr. 01, 2023	3,463,191
Shareholders' Equity (Deficit)
Stock options exercised	$ 2,384,500		2,384,500
Stock options exercised (in shares)	21,845
Compensation expense relating to stock options	$ 466,100		466,100
Cash dividends		(2,787,500)	(2,787,500)
Comprehensive income (Net income)		10,368,800	10,368,800
BALANCE at Jul. 01, 2023	$ 5,723,600	(49,336,700)	(43,613,100)
BALANCE (in shares) at Jul. 01, 2023	3,485,036
Shareholders' Equity (Deficit)
Stock options exercised	$ 179,300		179,300
Stock options exercised (in shares)	1,833
Compensation expense relating to stock options	$ 509,000		509,000
Cash dividends		(2,788,500)	(2,788,500)
Comprehensive income (Net income)		11,149,800	11,149,800
BALANCE at Sep. 30, 2023	$ 6,411,900	$ (40,975,400)	$ (34,563,500)
BALANCE (in shares) at Sep. 30, 2023	3,486,869		3,486,869