STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Nov. 30, 2019	$ 308	$ 885	$ 1,250	$ 28,310	$ 28,253
Dividend	0	0	0	(258)	(258)
Net income	0	0	0	692	692
Ending balance, value at Feb. 29, 2020	308	885	1,250	28,744	28,687
Beginning balance, value at Nov. 30, 2019	308	885	1,250	28,310	28,253
Net income					1,310
Ending balance, value at Aug. 29, 2020	308	885	1,250	29,362	29,305
Beginning balance, value at May. 31, 2020	308	885	1,250	29,233	29,176
Dividend	0	0	0	0	0
Net income	0	0	0	129	129
Ending balance, value at Aug. 29, 2020	308	885	1,250	29,362	29,305
Beginning balance, value at Nov. 30, 2020	308	885	1,250	29,524	29,467
Dividend	0	0	0	(258)	(258)
Net income	0	0	0	(301)	(301)
Ending balance, value at Feb. 27, 2021	308	885	1,250	28,965	28,908
Beginning balance, value at Nov. 30, 2020	308	885	1,250	29,524	29,467
Net income					2,080
Ending balance, value at Aug. 28, 2021	308	885	1,250	31,346	31,289
Beginning balance, value at Feb. 27, 2021	308	885	1,250	28,965	28,908
Dividend	0	0	0	0	0
Net income	0	0	0	1,293	1,293
Ending balance, value at May. 29, 2021	308	885	1,250	30,258	30,201
Dividend	0	0	0	0	0
Net income	0	0	0	1,088	1,088
Ending balance, value at Aug. 28, 2021	$ 308	$ 885	$ 1,250	$ 31,346	$ 31,289