Quarterly Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
		Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Revenues		$ 24,473	$ 21,716	$ 28,581	$ 33,482	$ 51,451	$ 41,356	$ 28,600	$ 41,670	$ 108,252	$ 163,077	$ 180,293
Gross (loss) profit		(468)	434	(157)	(166)	3,144	3,595	2,023	4,014	(357)	12,776	13,726
Operating Income (Loss)		(11,805)	(10,323)	(12,708)	(11,517)	(7,866)	(7,103)	(8,793)	(5,130)	(46,353)	(28,892)	(27,311)
Net loss		(12,948)	(11,067)	(15,414)	(11,779)	(8,905)	(6,628)	(9,997)	(4,154)	(51,208)	(29,684)	(38,883)	$ (38,883)
Dividends, Preferred Stock		(800)	(800)	(800)	(800)	(800)	(800)	(800)	(800)	(3,200)	(3,200)	(3,200)
Net Income (Loss) Available to Common Stockholders, Basic		$ (13,662)	$ (11,810)	$ (16,173)	$ (12,512)	$ (9,660)	$ (7,339)	$ (10,694)	$ (4,866)	$ (54,157)	$ (32,559)	$ (41,325)
Earnings Per Share, Basic and Diluted	[1]	$ (0.41)	$ (0.38)	$ (0.56)	$ (0.48)	$ (0.38)	$ (0.29)	$ (0.44)	$ (0.20)	$ (1.82)	$ (1.33)

[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.