Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Revenues:
Revenues	$ 9,216,000	$ 20,830,000	$ 26,999,000	$ 59,443,000
Costs of revenues:
Costs of revenues	12,856,000	21,459,000	32,844,000	55,437,000
Gross (loss) profit	(3,640,000)	(629,000)	(5,845,000)	4,006,000
Operating expenses:
Administrative and selling expenses	9,805,000	7,085,000	16,564,000	13,227,000
Research and development expenses	4,178,000	5,021,000	10,458,000	9,067,000
Total costs and expenses	13,983,000	12,106,000	27,022,000	22,294,000
Loss from operations	(17,623,000)	(12,735,000)	(32,867,000)	(18,288,000)
Interest expense	(1,807,000)	(2,059,000)	(4,271,000)	(4,200,000)
Other income (expense), net	(31,000)	1,620,000	129,000	2,096,000
Loss before benefit (provision) for income taxes	(19,461,000)	(13,174,000)	(37,009,000)	(20,392,000)
(Provision) benefit for income taxes	(69,000)	0	(69,000)	3,035,000
Net loss	(19,530,000)	(13,174,000)	(37,078,000)	(17,357,000)
Preferred stock dividends	(800,000)	(800,000)
Net loss attributable to common stockholders	$ (22,876,000)	$ (18,173,000)	$ (55,914,000)	$ (26,619,000)
Loss per share basic and diluted:
Net loss per share attributable to common stockholders	$ (2.06)	$ (2.74)	$ (5.77)	$ (4.22)
Basic and diluted weighted average shares outstanding	11,090,698	6,630,272	9,683,253	6,310,964
Series A Warrant [Member]
Operating expenses:
Warrant exchange	$ (3,169,000)		$ (3,169,000)
Series B Preferred Stock [Member]
Operating expenses:
Preferred stock dividends	(800,000)	$ (800,000)	(1,600,000)	$ (1,600,000)
Series C Preferred Stock [Member]
Operating expenses:
Preferred stock deemed contributions (dividends) and redemption value adjustment, net	1,599,000	(4,199,000)	(7,406,000)	(7,662,000)
Series D Preferred Stock [Member]
Operating expenses:
Preferred stock deemed dividends and redemption accretion	(976,000)	0	(6,661,000)	0
Product [Member]
Revenues:
Revenues		12,200,000		41,730,000
Costs of revenues:
Costs of revenues	6,393,000	13,947,000	9,815,000	40,084,000
Service and License [Member]
Revenues:
Revenues	2,598,000	3,206,000	14,370,000	7,310,000
Costs of revenues:
Costs of revenues	1,745,000	2,531,000	14,064,000	5,937,000
Generation [Member]
Revenues:
Revenues	1,633,000	1,742,000	3,112,000	3,634,000
Costs of revenues:
Costs of revenues	1,685,000	2,036,000	3,321,000	3,645,000
Advanced Technologies [Member]
Revenues:
Revenues	4,985,000	3,682,000	9,517,000	6,769,000
Costs of revenues:
Costs of revenues	$ 3,033,000	$ 2,945,000	$ 5,644,000	$ 5,771,000