CONDENSED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Aug. 26, 2017	Nov. 30, 2016
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 0	$ 0
Common Stock, par value	$ 0.10	$ 0.10
Common Stock, shares authorized	10,000,000	10,000,000
Common Stock, shares issued	3,078,315	3,078,315
Common Stock, shares outstanding	2,578,315	2,578,315
Treasury stock, shares	500,000	500,000