UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Noncontrolling Interests [Member]	Total
Balance, beginning at Sep. 28, 2019	$ 420	$ 6,240	$ 37,738	$ (6,077)	$ 6,208	$ 44,529
Balance, shares, beginning at Sep. 28, 2019	4,197,642			2,338,995
Net income			494		427	921
Distributions to noncontrolling interests					(432)	(432)
Balance, ending at Dec. 28, 2019	$ 420	6,240	38,232	$ (6,077)	6,203	45,018
Balance, shares, ending at Dec. 28, 2019	4,197,642			2,338,995
Balance, beginning at Sep. 28, 2019	$ 420	6,240	37,738	$ (6,077)	6,208	44,529
Balance, shares, beginning at Sep. 28, 2019	4,197,642			2,338,995
Net income						1,478
Balance, ending at Jun. 27, 2020	$ 420	6,240	38,425	$ (6,077)	6,084	45,092
Balance, shares, ending at Jun. 27, 2020	4,197,642			2,338,995
Balance, beginning at Dec. 28, 2019	$ 420	6,240	38,232	$ (6,077)	6,203	45,018
Balance, shares, beginning at Dec. 28, 2019	4,197,642			2,338,995
Net income			648		772	1,420
Distributions to noncontrolling interests					(483)	(483)
Balance, ending at Mar. 28, 2020	$ 420	6,240	38,880	$ (6,077)	6,492	45,955
Balance, shares, ending at Mar. 28, 2020	4,197,642			2,338,995
Net income			(455)		(408)	(863)
Balance, ending at Jun. 27, 2020	$ 420	6,240	38,425	$ (6,077)	6,084	45,092
Balance, shares, ending at Jun. 27, 2020	4,197,642			2,338,995
Balance, beginning at Oct. 03, 2020	$ 420	6,240	38,848	$ (6,077)	6,125	45,556
Balance, shares, beginning at Oct. 03, 2020	4,197,642			2,338,995
Net income			780		252	1,032
Distributions to noncontrolling interests					(242)	(242)
Balance, ending at Jan. 02, 2021	$ 420	6,240	39,628	$ (6,077)	6,135	46,346
Balance, shares, ending at Jan. 02, 2021	4,197,642			2,338,995
Balance, beginning at Oct. 03, 2020	$ 420	6,240	38,848	$ (6,077)	6,125	45,556
Balance, shares, beginning at Oct. 03, 2020	4,197,642			2,338,995
Net income						15,145
Balance, ending at Jul. 03, 2021	$ 420	6,240	49,278	$ (6,077)	9,632	59,493
Balance, shares, ending at Jul. 03, 2021	4,197,642			2,338,995
Balance, beginning at Jan. 02, 2021	$ 420	6,240	39,628	$ (6,077)	6,135	46,346
Balance, shares, beginning at Jan. 02, 2021	4,197,642			2,338,995
Net income			2,451		3,241	5,692
Distributions to noncontrolling interests					(483)	(483)
Balance, ending at Apr. 03, 2021	$ 420	6,240	42,079	$ (6,077)	8,893	51,555
Balance, shares, ending at Apr. 03, 2021	4,197,642			2,338,995
Net income			7,199		1,222	8,421
Distributions to noncontrolling interests					(483)	(483)
Balance, ending at Jul. 03, 2021	$ 420	$ 6,240	$ 49,278	$ (6,077)	$ 9,632	$ 59,493
Balance, shares, ending at Jul. 03, 2021	4,197,642			2,338,995