CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ 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. 29, 2018	$ 420	$ 6,240	$ 37,738	$ (6,077)	$ 6,208	$ 44,529
Balance, shares, beginning at Sep. 29, 2018	4,198			2,339
Net income (loss)			494		427	998
Distributions to noncontrolling interests					(432)	(432)
Balance, ending at Dec. 29, 2018	$ 420	6,240	35,353	$ (6,077)	6,203	45,018
Balance, shares, ending at Dec. 29, 2018	4,198			2,339
Balance, beginning at Sep. 29, 2018	$ 420	6,240	37,738	$ (6,077)	6,208	44,529
Balance, shares, beginning at Sep. 29, 2018	4,198			2,339
Net income (loss)						3,939
Balance, ending at Jun. 29, 2019	$ 420	6,240	36,822	$ (6,077)	6,085	43,490
Balance, shares, ending at Jun. 29, 2019	4,198			2,339
Balance, beginning at Dec. 29, 2018	$ 420	6,240	35,353	$ (6,077)	6,203	45,018
Balance, shares, beginning at Dec. 29, 2018	4,198			2,339
Net income (loss)			1,021		444	1,465
Distributions to noncontrolling interests					(464)	(464)
Dividends paid			(521)			(521)
Balance, ending at Mar. 30, 2019	$ 420	6,240	35,853	$ (6,077)	5,947	42,383
Balance, shares, ending at Mar. 30, 2019	4,198			2,339
Net income (loss)			968		508	1,476
Distributions to noncontrolling interests					(365)	(365)
Acquisition of minority interest					(5)	(5)
Dividends paid			(1)			(1)
Balance, ending at Jun. 29, 2019	$ 420	6,240	36,822	$ (6,077)	6,085	43,490
Balance, shares, ending at Jun. 29, 2019	4,198			2,339
Balance, beginning at Sep. 28, 2019	$ 420	6,240	37,738	$ (6,077)	6,208	44,529
Balance, shares, beginning at Sep. 28, 2019	4,198			2,339
Net income (loss)			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	4,198			2,339
Balance, beginning at Sep. 28, 2019	$ 420	6,240	37,738	$ (6,077)	6,208	44,529
Balance, shares, beginning at Sep. 28, 2019	4,198			2,339
Net income (loss)						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	4,198			2,339
Balance, beginning at Dec. 28, 2019	$ 420	6,240	38,232	$ (6,077)	6,203	45,018
Balance, shares, beginning at Dec. 28, 2019	4,198			2,339
Net income (loss)			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	4,198			2,339
Net income (loss)			(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	4,198			2,339