Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Revenues:
Revenues	$ 22,712,000	$ 12,110,000	$ 49,711,000	$ 71,553,000
Costs of revenues:
Costs of revenues	14,747,000	14,166,000	47,591,000	69,603,000
Gross profit (loss)	7,965,000	(2,056,000)	2,120,000	1,950,000
Operating expenses:
Administrative and selling expenses	7,058,000	6,100,000	23,622,000	19,327,000
Research and development expenses	1,977,000	6,318,000	12,435,000	15,385,000
Total costs and expenses	9,035,000	12,418,000	36,057,000	34,712,000
Loss from operations	(1,070,000)	(14,474,000)	(33,937,000)	(32,762,000)
Interest expense	(3,536,000)	(2,434,000)	(7,807,000)	(6,634,000)
Other (expense) income, net	(685,000)	1,042,000	(556,000)	3,138,000
Loss before benefit (provision) for income taxes	(5,291,000)	(15,866,000)	(42,300,000)	(36,258,000)
(Provision) benefit for income taxes	(20,000)	(15,000)	(89,000)	3,020,000
Net loss	(5,311,000)	(15,881,000)	(42,389,000)	(33,238,000)
Preferred stock dividends		(800,000)
Net loss attributable to common stockholders	$ (8,328,000)	$ (17,620,000)	$ (64,242,000)	$ (44,239,000)
Loss per share basic and diluted:
Net loss per share attributable to common stockholders	$ (0.18)	$ (2.45)	$ (2.97)	$ (6.70)
Basic and diluted weighted average shares outstanding	45,069,911	7,191,457	21,608,427	6,607,687
Series A Warrant [Member]
Operating expenses:
Warrant exchange			$ (3,169,000)
Series B Preferred Stock [Member]
Operating expenses:
Preferred stock dividends	$ (810,000)	$ (800,000)	(2,410,000)	$ (2,400,000)
Series C Preferred Stock [Member]
Operating expenses:
Preferred stock deemed dividends and redemption value adjustment, net	884,000	(939,000)	(6,522,000)	(8,601,000)
Series D Preferred Stock [Member]
Operating expenses:
Preferred stock deemed dividends and redemption accretion	(3,091,000)	0	(9,752,000)	0
Product [Member]
Revenues:
Revenues		1,328,000		43,058,000
Costs of revenues:
Costs of revenues	4,547,000	4,099,000	14,362,000	44,183,000
Service and License [Member]
Revenues:
Revenues	11,496,000	5,549,000	25,866,000	12,859,000
Costs of revenues:
Costs of revenues	1,102,000	5,997,000	15,166,000	11,934,000
Generation [Member]
Revenues:
Revenues	5,448,000	1,695,000	8,560,000	5,329,000
Costs of revenues:
Costs of revenues	5,726,000	1,375,000	9,047,000	5,020,000
Advanced Technologies [Member]
Revenues:
Revenues	5,768,000	3,538,000	15,285,000	10,307,000
Costs of revenues:
Costs of revenues	$ 3,372,000	$ 2,695,000	$ 9,016,000	$ 8,466,000