Note 15 - Stock Plans (Tables)

12 Months Ended

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