Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

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Consolidated Balance Sheets (Parenthetical) (USD $)
Feb. 28, 2013
Nov. 30, 2012
Consolidated Balance Sheets [Abstract]    
Accounts receivable, allowance for doubtful accounts $ 1,471,430 $ 1,367,465
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 500,000 500,000
Preferred stock, shares issued      
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 20,000,000 20,000,000
Common stock, shares issued 11,860,040 11,860,040
Common stock, shares outstanding 10,960,538 11,067,666