Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.8.0.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
Nov. 30, 2017
Nov. 30, 2016
Allowance for doubtful accounts $ 540,361 $ 1,392,380
Reserve for inventory obsolescence $ 158,269 $ 500,156
Preferred stock, par value (usd per share) $ 1 $ 1
Preferred stock shares authorized (shares) 20,000,000 20,000,000
Preferred stock shares issued (shares) 0 0
Common stock    
Common stock, par value (usd per share) $ 0.01 $ 0.01
Common stock shares authorized (shares) 15,000,000 15,000,000
Common stock shares issued (shares) 6,038,982 6,038,982
Common stock shares outstanding (shares) 6,038,982 6,038,982
Common Class A    
Common stock, par value (usd per share) $ 0.01 $ 0.01
Common stock shares authorized (shares) 5,000,000 5,000,000
Common stock shares issued (shares) 967,702 967,702
Common stock shares outstanding (shares) 967,702 967,702