Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2019	Aug. 25, 2018	Aug. 31, 2019	Aug. 25, 2018
Net income	$ 2,157	$ 2,945	$ 3,210	$ 6,321
Other comprehensive income:
Other comprehensive income, net of tax	58	80	172	240
Total comprehensive income	2,215	3,025	3,382	6,561
Pension Plan [Member]
Other comprehensive income:
Amortization associated with Retirement Plan	31	31	93	93
Income taxes related to Retirement Plan	(8)	(8)	(24)	(24)
Supplemental Employee Retirement Plan [Member]
Other comprehensive income:
Amortization associated with Retirement Plan	47	76	139	228
Income taxes related to Retirement Plan	$ (12)	$ (19)	$ (36)	$ (57)