Consolidated Balance Sheets (Parenthetical) - $ / shares	Feb. 28, 2019	Nov. 30, 2018
Consolidated Balance Sheets
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	5,635,706	5,635,706
Common stock, shares outstanding	5,065,173	5,065,173
Treasury stock, shares	570,533	570,533