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Note 16 - Stock Plans (Details) - Stock Options Outstanding and Exercisable (USD $)
12 Months Ended
Oct. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Minimum $ 1.93
Exercise Price Maximum $ 60.36
Stock Options Number Outstanding (in Shares) 6,591,054
Stock Options Weighted-Average Exercise Price $ 5.74
Stock Options Weighted Average Remaining Contractual Life 6 years 292 days
Exercise Price Maximum $ 60.36
Stock Options Number Outstanding (in Shares) 3,161,952
Stock Options Weighted-Average Exercise Price $ 7.95
Stock Options Weighted Average Remaining Contractual Life 5 years 94 days
$1.93 - $5.00 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Minimum $ 1.93
Exercise Price Maximum $ 5.00
Stock Options Number Outstanding (in Shares) 4,405,679
Stock Options Weighted-Average Exercise Price $ 2.95
Stock Options Weighted Average Remaining Contractual Life 7 years 25 days
Exercise Price Maximum $ 5.00
Stock Options Number Outstanding (in Shares) 1,864,077
Stock Options Weighted-Average Exercise Price $ 3.14
Stock Options Weighted Average Remaining Contractual Life 6 years 65 days
$5.01 - $10.00 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Minimum $ 5.01
Exercise Price Maximum $ 10.00
Stock Options Number Outstanding (in Shares) 1,701,500
Stock Options Weighted-Average Exercise Price $ 6.37
Stock Options Weighted Average Remaining Contractual Life 7 years 98 days
Exercise Price Maximum $ 10.00
Stock Options Number Outstanding (in Shares) 814,000
Stock Options Weighted-Average Exercise Price $ 6.46
Stock Options Weighted Average Remaining Contractual Life 4 years 244 days
$10.01 - $20.00 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Minimum $ 10.01
Exercise Price Maximum $ 20.00
Exercise Price Maximum $ 20.00
$20.01 - $30.00 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Minimum $ 20.01
Exercise Price Maximum $ 30.00
Stock Options Number Outstanding (in Shares) 241,500
Stock Options Weighted-Average Exercise Price $ 21.70
Stock Options Weighted Average Remaining Contractual Life 3 years 240 days
Exercise Price Maximum $ 30.00
Stock Options Number Outstanding (in Shares) 241,500
Stock Options Weighted-Average Exercise Price $ 21.70
Stock Options Weighted Average Remaining Contractual Life 3 years 240 days
$30.01 - $40.00 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Minimum $ 30.01
Exercise Price Maximum $ 40.00
Stock Options Number Outstanding (in Shares) 197,375
Stock Options Weighted-Average Exercise Price $ 32.53
Stock Options Weighted Average Remaining Contractual Life 1 year 281 days
Exercise Price Maximum $ 40.00
Stock Options Number Outstanding (in Shares) 197,375
Stock Options Weighted-Average Exercise Price $ 32.53
Stock Options Weighted Average Remaining Contractual Life 1 year 281 days
$40.01 - $50.00 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Minimum $ 40.01
Exercise Price Maximum $ 50.00
Stock Options Number Outstanding (in Shares) 10,000
Stock Options Weighted-Average Exercise Price $ 41.45
Stock Options Weighted Average Remaining Contractual Life 3 months
Exercise Price Maximum $ 50.00
Stock Options Number Outstanding (in Shares) 10,000
Stock Options Weighted-Average Exercise Price $ 41.45
Stock Options Weighted Average Remaining Contractual Life 3 months
$50.01 - $60.00 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Minimum $ 50.01
Exercise Price Maximum $ 60.00
Stock Options Number Outstanding (in Shares) 30,000
Stock Options Weighted-Average Exercise Price $ 54.70
Stock Options Weighted Average Remaining Contractual Life 1 year 153 days
Exercise Price Maximum $ 60.00
Stock Options Number Outstanding (in Shares) 30,000
Stock Options Weighted-Average Exercise Price $ 54.70
Stock Options Weighted Average Remaining Contractual Life 1 year 153 days
$60.01 - $70.00 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise Price Minimum $ 60.01
Exercise Price Maximum $ 70.00
Stock Options Number Outstanding (in Shares) 5,000
Stock Options Weighted-Average Exercise Price $ 60.36
Stock Options Weighted Average Remaining Contractual Life 1 year 244 days
Exercise Price Maximum $ 70.00
Stock Options Number Outstanding (in Shares) 5,000
Stock Options Weighted-Average Exercise Price $ 60.36
Stock Options Weighted Average Remaining Contractual Life 4 years 302 days