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Note 4 - Long-term Debt (Details Textual) - USD ($)
Sep. 06, 2002
Sep. 06, 2002
Nov. 30, 2015
Nov. 30, 2014
Debt Instrument, Periodic Payment $ 35,000      
Debt Instrument, Interest Rate, Stated Percentage 4.75% 4.75%    
Debt Instrument, Term 15 years      
Debt Instrument, Face Amount $ 386,000 $ 386,000    
Stock Repurchased and Retired During Period, Shares   1,380,040    
Notes Payable, Noncurrent     $ 33,000 $ 65,000