Consolidated Balance Sheets (Parenthetical) - $ / shares	Feb. 28, 2018	Nov. 30, 2017
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	5,546,500	5,541,029
Common stock, shares outstanding	5,001,006	5,000,535
Treasury stock, shares	545,494	540,494