Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Revenues:
Revenues	$ 16,264	$ 17,783
Costs of revenues:
Costs of revenues	12,983	19,988
Gross profit (loss)	3,281	(2,205)
Operating expenses:
Administrative and selling expenses	5,266	6,759
Research and development expenses	1,155	6,280
Total costs and expenses	6,421	13,039
Loss from operations	(3,140)	(15,244)
Interest expense	(3,277)	(2,464)
Change in fair value of common stock warrant liability	(34,245)	0
Other income, net	531	160
Loss before benefit (provision) for income taxes	(40,131)	(17,548)
(Provision) benefit for income taxes	(20)
Net loss	(40,151)	(17,548)
Series B preferred stock dividends	(931)	(800)
Net loss attributable to common stockholders	$ (41,082)	$ (33,038)
Loss per share basic and diluted:
Net loss per share attributable to common stockholders	$ (0.20)	$ (3.97)
Basic and diluted weighted average shares outstanding	202,216,493	8,321,702
Series B Preferred Stock [Member]
Operating expenses:
Series B preferred stock dividends	$ (931)	$ (800)
Series C Preferred Stock [Member]
Operating expenses:
Series C preferred stock deemed dividends and redemption value adjustment	0	(9,005)
Series D Preferred Stock [Member]
Operating expenses:
Series D preferred stock deemed dividends and redemption accretion	0	(5,685)
Product [Member]
Costs of revenues:
Costs of revenues	2,016	3,422
Service and License [Member]
Revenues:
Revenues	5,612	11,772
Costs of revenues:
Costs of revenues	1,618	12,319
Generation [Member]
Revenues:
Revenues	5,442	1,479
Costs of revenues:
Costs of revenues	5,557	1,636
Advanced Technologies [Member]
Revenues:
Revenues	5,210	4,532
Costs of revenues:
Costs of revenues	$ 3,792	$ 2,611