Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 29, 2020	Aug. 31, 2019	Aug. 29, 2020	Aug. 31, 2019
Net income (loss)	$ 2,178	$ 2,157	$ (16,964)	$ 3,210
Other comprehensive income:
Long Term Cash Awards (LTCA)	31	31	94	93
Other comprehensive income, net of tax	25	58	74	172
Total comprehensive income (loss)	2,203	2,215	(16,890)	3,382
Pension Plan [Member]
Other comprehensive income:
Income taxes related to LTCA	(8)	(8)	(24)	(24)
Supplemental Employee Retirement Plan [Member]
Other comprehensive income:
Long Term Cash Awards (LTCA)	2	47	5	139
Income taxes related to LTCA	$ 0	$ (12)	$ (1)	$ (36)