Quarterly Information (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Oct. 31, 2014		Jul. 31, 2014		Apr. 30, 2014		Jan. 31, 2014		Oct. 31, 2013		Jul. 31, 2013		Apr. 30, 2013		Jan. 31, 2013		Oct. 31, 2014		Oct. 31, 2013		Oct. 31, 2012
Revenues	$ 54,409		$ 43,176		$ 38,274		$ 44,434		$ 55,157		$ 53,707		$ 42,436		$ 36,358		$ 180,293		$ 187,658		$ 120,603
Gross Profit	5,955		3,961		1,611		2,199		2,597		4,522		2,314		(2,311)		13,726		7,122		445
Operating Income (Loss)	(4,968)		(6,000)		(8,773)		(7,570)		(6,952)		(4,594)		(7,197)		(11,070)		(27,311)		(29,813)		(32,129)
Net loss	(4,890)		(7,139)		(16,039)		(10,815)		(9,997)		(5,814)		(7,629)		(11,879)		(38,883)		(35,319)		(35,906)
Dividends, Preferred Stock	(800)		(800)		(800)		(800)		(800)		(800)		(800)		(800)		(3,200)		(3,200)		(3,201)
Net Income (Loss) Available to Common Stockholders, Basic	$ (5,500)		$ (7,778)		$ (16,643)		$ (11,404)		$ (10,500)		$ (6,412)		$ (8,165)		$ (12,481)		$ (41,325)		$ (37,558)		$ (38,696)
Earnings Per Share, Basic and Diluted	$ (0.02)	[1]	$ (0.03)	[1]	$ (0.07)	[1]	$ (0.06)	[1]	$ (0.06)	[1]	$ (0.03)	[1]	$ (0.04)	[1]	$ (0.07)	[1]	$ (0.17)	[1]	$ (0.20)	[1]

[1] The full year net loss to common shareholders basic and diluted share may not equal the sum of the quarters due to weighting of outstanding shares.