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Note 4 - Stock Options (Details Textual) - $ / shares
Feb. 28, 2017
Nov. 30, 2016
Feb. 29, 2016
Nov. 30, 2015
May 31, 2001
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized         1,400,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises and Forfeitures in Period     1,225,000    
Share Price     $ 0.56    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 0 0 175,000 237,500