Quarterly Information (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Oct. 31, 2012		Jul. 31, 2012		Apr. 30, 2012		Jan. 31, 2012		Oct. 31, 2011		Jul. 31, 2011		Apr. 30, 2011		Jan. 31, 2011		Oct. 31, 2012		Oct. 31, 2011		Oct. 31, 2010
Revenues	$ 35,420		$ 29,693		$ 24,153		$ 31,337		$ 34,723		$ 31,160		$ 28,607		$ 28,080		$ 120,603	[1]	$ 122,570	[1]	$ 69,777	[1]
Gross Profit	878		(2,738)		201		2,104		439		137		(10,870)		(2,316)		445		(12,610)		(18,653)
Operating Income (Loss)	(8,418)		(10,511)		(7,757)		(5,443)		(7,884)		(7,359)		(19,822)		(10,612)		(32,129)		(45,677)		(54,365)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(11,519)		(10,010)		(8,363)		(6,014)		(7,129)		(7,830)		(20,008)		(11,007)		(35,906)		(45,974)		(56,326)
Dividends, Preferred Stock	(800)		(800)		(801)		(800)		(800)		(800)		(800)		(800)		(3,201)		(3,200)		(3,201)
Net Income (Loss) Available to Common Stockholders, Basic	$ (12,138)		$ (10,722)		$ (9,093)		$ (6,743)		$ (7,865)		$ (8,554)		$ (29,743)		$ (11,738)		$ (38,696)		$ (57,900)		$ (58,864)
Earnings Per Share, Basic and Diluted	$ (0.07)	[2]	$ (0.06)	[2]	$ (0.06)	[2]	$ (0.05)	[2]	$ (0.06)	[2]	$ (0.07)	[2]	$ (0.24)	[2]	$ (0.10)	[2]	$ (0.23)	[2]	$ (0.47)	[2]

[1] (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.