Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.8.0.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
Feb. 28, 2018
Nov. 30, 2017
Accounts receivable, allowance for doubtful accounts $ 2,024,893 $ 2,098,991
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 500,000 500,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 20,000,000 20,000,000
Common stock, shares issued 12,900,767 12,899,517
Common stock, shares outstanding 7,105,191 7,103,941
Series A Junior Participating Preferred Stock [Member]    
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 20,000 20,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0