Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Revenues:
Revenues	$ 12,110	$ 10,358	$ 71,553	$ 47,777
Costs of revenues:
Costs of revenues	14,166	12,984	69,603	48,207
Gross profit (loss)	(2,056)	(2,626)	1,950	(430)
Operating expenses:
Administrative and selling expenses	6,100	6,310	19,327	18,797
Research and development expenses	6,318	5,394	15,385	16,172
Restructuring expense				1,355
Total costs and expenses	12,418	11,704	34,712	36,324
Loss from operations	(14,474)	(14,330)	(32,762)	(36,754)
Interest expense	(2,434)	(2,279)	(6,634)	(6,856)
Other income (expense), net	1,042	(393)	3,138	(270)
Loss before (provision) benefit for income taxes	(15,866)	(17,002)	(36,258)	(43,880)
(Provision) benefit for income taxes	(15)	1	3,020	(44)
Net loss	(15,881)	(17,001)	(33,238)	(43,924)
Net loss attributable to common stockholders	$ (17,620)	$ (17,801)	$ (44,239)	$ (46,324)
Loss per share basic and diluted:
Net loss per share attributable to common stockholders	$ (0.20)	$ (0.31)	$ (0.56)	$ (1.01)
Basic and diluted weighted average shares outstanding	86,297,481	57,420,050	79,292,240	45,903,033
Series C Preferred Stock [Member]
Operating expenses:
Series C preferred stock deemed dividends	$ (939)	$ 0	$ (8,601)	$ 0
Series B Preferred Stock [Member]
Operating expenses:
Series B preferred stock dividends	(800)	(800)	(2,400)	(2,400)
Product [Member]
Revenues:
Revenues	1,328	611	43,058	3,155
Costs of revenues:
Costs of revenues	4,099	4,266	44,183	11,525
Service and License [Member]
Revenues:
Revenues	5,549	4,809	12,859	24,337
Costs of revenues:
Costs of revenues	5,997	4,453	11,934	22,878
Generation [Member]
Revenues:
Revenues	1,695	1,690	5,329	5,409
Costs of revenues:
Costs of revenues	1,375	1,500	5,020	3,909
Advanced Technologies [Member]
Revenues:
Revenues	3,538	3,248	10,307	14,876
Costs of revenues:
Costs of revenues	$ 2,695	$ 2,765	$ 8,466	$ 9,895