CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Total	Cumulative effect of CECL adoption	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Deficit Cumulative effect of CECL adoption	Accumulated Other Comprehensive Income	Class B Common Stock Common Stock
Balance a the beginning at Dec. 25, 2021	$ 66,375,000		$ 44,378,000	$ 157,658,000	$ (138,706,000)		$ 30,000	$ 3,015,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of Common Stock	(95,000)		(105,000)	10,000
Restricted stock grants issued	0		580,000	(854,000)				274,000
Restricted stock grants forfeited	0		(6,000)	6,000
Stock-based compensation expense	154,000			154,000
Net loss	(3,357,000)				(3,357,000)
Other comprehensive loss	170,000						170,000
Balance at the end at Mar. 26, 2022	63,247,000		44,847,000	156,974,000	(142,063,000)		200,000	3,289,000
Balance a the beginning at Dec. 25, 2021	66,375,000		44,378,000	157,658,000	(138,706,000)		30,000	3,015,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(7,844,000)
Other comprehensive loss	170,000
Balance at the end at Jun. 25, 2022	58,957,000		45,178,000	156,742,000	(146,550,000)		200,000	3,387,000
Balance a the beginning at Mar. 26, 2022	63,247,000		44,847,000	156,974,000	(142,063,000)		200,000	3,289,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock grants issued			142,957
Restricted stock grants issued	0		331,000	(429,000)				98,000
Stock-based compensation expense	197,000			197,000
Net loss	(4,487,000)				(4,487,000)
Other comprehensive loss	0						0
Balance at the end at Jun. 25, 2022	58,957,000		45,178,000	156,742,000	(146,550,000)		200,000	3,387,000
Balance a the beginning at Dec. 31, 2022	31,514,000	$ (198,000)	43,360,000	158,331,000	(173,784,000)	$ (198,000)	219,000	3,388,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of Common Stock	(44,000)		(168,000)	124,000
Class B converted into common stock	0		25,000					(25,000)
Stock-based compensation expense	197,000			197,000
Net loss	(1,758,000)				(1,758,000)
Other comprehensive loss	(5,000)						(5,000)
Balance at the end at Apr. 01, 2023	29,706,000		43,217,000	158,652,000	(175,740,000)		214,000	3,363,000
Balance a the beginning at Dec. 31, 2022	31,514,000	$ (198,000)	43,360,000	158,331,000	(173,784,000)	$ (198,000)	219,000	3,388,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,484,000)
Other comprehensive loss	(11,000)
Balance at the end at Jul. 01, 2023	28,145,000		43,306,000	158,734,000	(177,466,000)		208,000	3,363,000
Balance a the beginning at Apr. 01, 2023	29,706,000		43,217,000	158,652,000	(175,740,000)		214,000	3,363,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock grants issued	0		120,000	(120,000)				0
Restricted stock grants forfeited	0		(31,000)	31,000
Stock-based compensation expense	171,000			171,000
Net loss	(1,726,000)				(1,726,000)
Other comprehensive loss	(6,000)						(6,000)
Balance at the end at Jul. 01, 2023	$ 28,145,000		$ 43,306,000	$ 158,734,000	$ (177,466,000)		$ 208,000	$ 3,363,000