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Note 15 - Stock Plans (Tables) | 12 Months Ended
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Oct. 31, 2012
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | October 31,2012 |  |  | Weighted-Average Exercise Price |  |  | October 31,2011 |  |  | Weighted-Average Exercise Price |  |  | October 31,2010 |  |  | Weighted-Average Exercise Price |
Options outstanding at beginning of period |  | 5,094,367 |  |  | $ | 7.05 |  |  | 6,316,860 |  |  | $ | 8.72 |  |  | 5,774,767 |  |  | $ | 9.42 |
Granted |  | 1,334,828 |  |  | $ | 2.59 |  |  | 674,100 |  |  | $ | 1.93 |  |  | 1,132,750 |  |  | $ | 4.73 |
Exercised |  | 6,250 |  |  |  | 2.55 |  |  |  |  |  |  |  |  |  | 348,000 |  |  | $ | 2.86 |
Forfeited |  | 94,808 |  |  | $ | 4.77 |  |  | 238,499 |  |  | $ | 7.33 |  |  | 242,657 |  |  | $ | 15.33 |
Cancellations |  |  |  |  |  |  |  |  | 1,200,000 |  |  | $ | 11.19 |  |  |  |  |  |  |  |
Expired |  | 309,067 |  |  | $ | 9.61 |  |  | 458,094 |  |  | $ | 11.57 |  |  |  |  |  |  |  |
Options outstanding at end of period |  | 6,019,070 |  |  | $ | 5.97 |  |  | 5,094,367 |  |  | $ | 7.05 |  |  | 6,316,860 |  |  | $ | 8.72 |
Options exercisable at end of period |  | 2,467,170 |  |  |  |  |  |  | 1,764,338 |  |  |  |  |  |  | 2,519,600 |  |  |  |  |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
Range of Exercise Prices | Number Outstanding |  | Weighted-Average Exercise Price |  | Weighted- Average Remaining Contractual Life |
$1.93 | – | $5.00 | 4,531,491 |  | $ | 2.95 |  | 8.06 |
$5.01 | – | $10.00 | 831,000 |  | $ | 6.46 |  | 5.67 |
$10.01 | – | $20.00 | 141,704 |  | $ | 16.97 |  | 0.24 |
$20.01 | – | $30.00 | 265,000 |  | $ | 21.77 |  | 4.57 |
$30.01 | – | $40.00 | 204,875 |  | $ | 32.53 |  | 2.77 |
$40.01 | – | $50.00 | 10,000 |  | $ | 41.45 |  | 1.25 |
$50.01 | – | $60.00 | 30,000 |  | $ | 54.70 |  | 2.42 |
$60.01 | – | $70.00 | 5,000 |  | $ | 60.36 |  | 2.67 |
| 6,019,070 |  | $ | 5.97 |  | 7.17 |
Range of Exercise Prices | Number Exercisable |  | Weighted-Average Exercise Price |  | Weighted- Average Remaining Contractual Life |
$1.93 | – | $5.00 | 1,176,588 |  | $ | 3.09 |  | 6.99 |
$5.01 | – | $10.00 | 634,003 |  | $ | 6.46 |  | 5.67 |
$10.01 | – | $20.00 | 141,704 |  | $ | 16.97 |  | 0.24 |
$20.01 | – | $30.00 | 265,000 |  | $ | 21.77 |  | 4.57 |
$30.01 | – | $40.00 | 204,875 |  | $ | 32.53 |  | 2.77 |
$40.01 | – | $50.00 | 10,000 |  | $ | 41.45 |  | 1.25 |
$50.01 | – | $60.00 | 30,000 |  | $ | 54.70 |  | 2.42 |
$60.01 | – | $70.00 | 5,000 |  | $ | 60.36 |  | 2.67 |
| 2,467,170 |  | $ | 10.10 |  | 5.56 |
Restricted Stock [Member] |
Schedule of Nonvested Share Activity [Table Text Block] |
|  | Shares |  |  | Weighted-Average Grant Date Fair Value |
Nonvested at beginning of period |  |  | 1,810,177 |  |  | $ | 4.99 |
Granted |  |  | 557,693 |  |  | $ | 4.11 |
Vested |  |  | (221,319 | ) |  | $ | 7.45 |
Forfeited |  |  | (18,546 | ) |  | $ | 5.82 |
Nonvested at end of period |  |  | 2,128,005 |  |  | $ | 4.49 |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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