Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details Textual)

v2.4.0.6
Intangible Assets (Details Textual) (USD $)
3 Months Ended 9 Months Ended
Aug. 31, 2012
Aug. 31, 2011
Aug. 31, 2012
Aug. 31, 2011
Intangible Assets (Textual) [Abstract]        
Period over which patents are amortized on the straight-line method     17 years  
Amortization Expense $ 116 $ 116 $ 347 $ 345
Estimated amortization expense, 2012 463   463  
Estimated amortization expense, 2013 463   463  
Estimated amortization expense, 2014 439   439  
Estimated amortization expense, 2015 421   421  
Estimated amortization expense, 2016 $ 421   $ 421