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Note 15 - Stock Plans (Tables)

12 Months Ended

Oct. 31, 2016

Notes Tables

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

		October 31, 2016			Weighted-Average Exercise Price			October 31, 2015			Weighted-Average Exercise Price			October 31, 2014			Weighted-Average Exercise Price
Options outstanding at beginning of period		6,393,876			$4.78			6,720,251			$5.23			6,591,054			$5.74
Granted		1,148,481			$1.95			173,750			$2.47			376,822			$4.41
Exercised		-			$-			18,125			$2.48			42,375			$2.74
Forfeited		51,125			$2.73			203,436			$3.78			56,375			$2.66
Expired		117,281			$25.05			278,564			$15.04			148,875			$27.42
Options outstanding at end of period		7,373,951			$4.03			6,393,876			$4.78			6,720,251			$5.23
Options exercisable at end of period		5,071,181						4,566,290						4,100,413

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

									Number			Weighted- Average			Weighted- Average Remaining Contractual
Range of Exercise Prices									Outstanding			Exercise Price			Life
$1.54			–			$5.00			5,595,326			$2.81			5.35
$5.01			–			$10.00			1,601,750			$6.36			4.30
$10.01			–			$20.00			-			$-			-
$20.01			–			$30.00			176,875			$21.68			0.58
									7,373,951			$4.03			5.00

									Number			Weighted- Average			Weighted- Average Remaining Contractual
Range of Exercise Prices									Exercisable			Exercise Price			Life
$1.54			–			$5.00			3,915,056			$3.00			3.89
$5.01			–			$10.00			979,250			$6.42			2.82
$10.01			–			$20.00			-			$-			-
$20.01			–			$30.00			176,875			$21.68			0.58
									5,071,181			$4.31			3.57

Schedule of Nonvested Share Activity [Table Text Block]

		Shares			Weighted-Average Grant Date Fair Value
Nonvested at beginning of period		3,600,769			$4.16
Granted		4,031,124			$1.67
Vested		259,299			$3.19
Forfeited		133,125			$4.62
Nonvested at end of period		7,239,469			$2.80

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- Definition

Tabular disclosure of the changes in outstanding nonvested shares.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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+ References

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