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Note 16 - Stock Plans (Details) - Stock Option Activity (USD $)
 12 Months Ended
Oct. 31, 2013
Oct. 31, 2012
Oct. 31, 2011
Stock Option Activity [Abstract]      
Options outstanding 6,019,070 5,094,367 6,316,860
Options outstanding (in Dollars per share) $ 5.97 $ 7.05 $ 8.72
Options exercisable at end of period 3,161,952 2,467,170 1,764,338
Granted 887,500 1,334,828 674,100
Granted (in Dollars per share) $ 6.28 $ 2.59 $ 1.93
Exercised 44,812 6,250  
Exercised (in Dollars per share) $ 2.67 $ 2.55  
Forfeited 76,500 94,808 238,499
Forfeited (in Dollars per share) $ 3.06 $ 4.77 $ 7.33
Cancellations     1,200,000
Cancellations (in Dollars per share)     $ 11.19
Expired 194,204 309,067 458,094
Expired (in Dollars per share) $ 16.92 $ 9.61 $ 11.57
Options outstanding 6,591,054 6,019,070 5,094,367
Options outstanding (in Dollars per share) $ 5.74 $ 5.97 $ 7.05