Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.5.0.2
Consolidated Balance Sheets (Parenthetical) - USD ($)
Aug. 31, 2016
Nov. 30, 2015
Allowance for doubtful accounts receivable $ 745,277 $ 912,688
Reserve for inventory obsolescence $ 331,585 $ 821,259
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