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Note 16 - Stock Plans (Tables)

12 Months Ended

Oct. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

		October 31, 2014			Weighted-Average Exercise Price			October 31, 2013			Weighted-Average Exercise Price			October 31, 2012			Weighted-Average Exercise Price
Options outstanding at beginning of period		6,591,054			$5.74			6,019,070			$5.97			5,094,367			$7.05
Granted		376,822			$4.41			887,500			$6.28			1,334,828			$2.59
Exercised		42,375			$2.74			44,812			$2.67			6,250			$2.55
Forfeited		56,375			$2.66			76,500			$3.06			94,808			$4.77
Expired		148,875			$27.42			194,204			$16.92			309,067			$9.61
Options outstanding at end of period		6,720,251			$5.23			6,591,054			$5.74			6,019,070			$5.97
Options exercisable at end of period		4,100,413						3,161,952						2,467,170

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		4,672,501			$3.07			6.35
$5.01	–	$10.00		1,690,250			$6.37			6.29
$10.01	–	$20.00		-			$-			-
$20.01	–	$30.00		218,375			$21.73			2.58
$30.01	–	$40.00		104,125			$32.33			1.58
$40.01	–	$50.00		-			$-			-
$50.01	–	$60.00		30,000			$54.70			0.36
$60.01	–	$70.00		5,000			$60.36			0.58
				6,720,251			$5.23			6.11

Range of Exercise Prices				Number Exercisable			Weighted-Average Exercise Price			Weighted- Average Remaining Contractual Life
$1.93	–	$5.00		2,940,163			$3.02			5.55
$5.01	–	$10.00		802,750			$6.46			3.67
$10.01	–	$20.00		-			$-			-
$20.01	–	$30.00		218,375			$21.73			2.58
$30.01	–	$40.00		104,125			$32.33			1.58
$40.01	–	$50.00		-			$-			-
$50.01	–	$60.00		30,000			$54.70			0.36
$60.01	–	$70.00		5,000			$60.36			0.58
				4,100,413			$5.88			4.88

Schedule of Nonvested Share Activity [Table Text Block]

		Shares			Weighted-Average Grant Date Fair Value
Nonvested at beginning of period		2,463,647			$5.10
Granted		878,834			$4.36
Vested		(874,343	)		$4.60
Forfeited		(9,000	)		$1.93
Nonvested at end of period		2,459,138			$5.02

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Tabular disclosure of the changes in outstanding nonvested shares.

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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.

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