Quarterly Information (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Oct. 31, 2013		Jul. 31, 2013		Apr. 30, 2013		Jan. 31, 2013		Oct. 31, 2012		Jul. 31, 2012		Apr. 30, 2012		Jan. 31, 2012		Oct. 31, 2013		Oct. 31, 2012		Oct. 31, 2011
Revenues	$ 55,157		$ 53,707		$ 42,436		$ 36,358		$ 35,420		$ 29,693		$ 24,153		$ 31,337		$ 187,658	[1]	$ 120,603	[1]	$ 122,570	[1]
Gross Profit	2,597		4,522		2,314		(2,311)		878		(2,738)		201		2,104		7,122		445		(12,610)
Operating Income (Loss)	(6,952)		(4,594)		(7,197)		(11,070)		(8,418)		(10,511)		(7,757)		(5,443)		(29,813)		(32,129)		(45,677)
Net loss	(9,997)		(5,814)		(7,629)		(11,879)		(11,519)		(10,010)		(8,363)		(6,014)		(35,319)		(35,906)		(45,974)
Dividends, Preferred Stock	(800)		(800)		(800)		(800)		(800)		(800)		(801)		(800)		(3,200)		(3,201)		(3,200)
Net Income (Loss) Available to Common Stockholders, Basic	$ (10,500)		$ (6,412)		$ (8,165)		$ (12,481)		$ (12,138)		$ (10,722)		$ (9,093)		$ (6,743)		$ (37,558)		$ (38,696)		$ (57,900)
Earnings Per Share, Basic and Diluted	$ (0.06)	[2]	$ (0.03)	[2]	$ (0.04)	[2]	$ (0.07)	[2]	$ (0.07)	[2]	$ (0.06)	[2]	$ (0.06)	[2]	$ (0.05)	[2]	$ (0.20)	[2]	$ (0.23)

[1] Includes revenue from a related party. Refer to Concentrations in note 1 to the financial statements.

[2] 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.