CONSOLIDATED CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT) - USD ($)	Common Stock	Retained Earnings (Accumulated Deficit).	Total
BALANCE at Dec. 26, 2020	$ 9,281,800	$ (20,660,500)	$ (11,378,700)
BALANCE (in shares) at Dec. 26, 2020	3,756,028
Shareholders' Equity (Deficit)
Repurchase of common stock	$ (9,935,800)	(519,400)	(10,455,200)
Repurchase of common stock (in shares)	(58,255)
Stock options exercised	$ 268,800		268,800
Stock options exercised (in shares)	2,950
Compensation expense relating to stock options	$ 385,200		385,200
Cash dividends		(935,400)	(935,400)
Comprehensive income (Net income)		9,311,100	9,311,100
BALANCE at Mar. 27, 2021		(12,804,200)	(12,804,200)
BALANCE (in shares) at Mar. 27, 2021	3,700,723
Shareholders' Equity (Deficit)
Repurchase of common stock	$ (1,254,400)	(7,208,600)	(8,463,000)
Repurchase of common stock (in shares)	(43,833)
Stock options exercised	$ 941,500		941,500
Stock options exercised (in shares)	11,129
Compensation expense relating to stock options	$ 312,900		312,900
Cash dividends		(1,665,000)	(1,665,000)
Comprehensive income (Net income)		8,937,300	8,937,300
BALANCE at Jun. 26, 2021		(12,740,500)	(12,740,500)
BALANCE (in shares) at Jun. 26, 2021	3,668,019
BALANCE at Dec. 25, 2021		(39,083,400)	$ (39,083,400)
BALANCE (in shares) at Dec. 25, 2021	3,635,806		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
BALANCE at Dec. 25, 2021		(39,083,400)	$ (39,083,400)
BALANCE (in shares) at Dec. 25, 2021	3,635,806		3,635,806
BALANCE at Jun. 25, 2022		(68,778,700)	$ (68,778,700)
BALANCE (in shares) at Jun. 25, 2022	3,437,806		3,437,806
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		3,437,806