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Consolidated Statements of Operations - USD ($)
 12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Revenues:      
Revenues $ 60,752,000 $ 89,437,000 $ 95,666,000
Costs of revenues:      
Costs of revenues 82,021,000 86,344,000 92,932,000
Gross (loss) profit (21,269,000) 3,093,000 2,734,000
Operating expenses:      
Administrative and selling expenses 31,874,000 24,908,000 25,916,000
Research and development expenses 13,786,000 22,817,000 20,398,000
Restructuring expense   0 1,355,000
Total operating expenses 45,660,000 47,725,000 47,669,000
Loss from operations (66,929,000) (44,632,000) (44,935,000)
Interest expense (10,623,000) (9,055,000) (9,171,000)
Other income, net 93,000 3,338,000 247,000
Loss before (provision) benefit for income taxes (77,459,000) (50,349,000) (53,859,000)
(Provision) benefit for income taxes (109,000) 3,015,000 (44,000)
Net loss (77,568,000) (47,334,000) (53,903,000)
Series B Preferred stock dividends (3,231,000) (3,200,000) (3,200,000)
Net loss attributable to common stockholders $ (100,245,000) $ (62,168,000) $ (57,103,000)
Net loss to common stockholders per share      
Basic $ (1.82) $ (9.01) $ (13.73)
Diluted [1] $ (1.82) $ (9.01) $ (13.73)
Weighted average shares outstanding      
Basic 55,081,266 6,896,189 4,159,575
Diluted 55,081,266 6,896,189 4,159,575
Series A Warrant [Member]      
Operating expenses:      
Series A warrant exchange $ (3,169,000)    
Series B Preferred Stock [Member]      
Operating expenses:      
Series B Preferred stock dividends (3,231,000) $ (3,200,000) $ (3,200,000)
Series C Preferred Stock [Member]      
Operating expenses:      
Series C Preferred stock deemed dividends and redemption value adjustment, net (6,522,000) (9,559,000)  
Series D Preferred Stock [Member]      
Operating expenses:      
Series D Preferred stock deemed dividends and redemption accretion (9,755,000) (2,075,000) 0
Product Sales [Member]      
Revenues:      
Revenues 481,000 52,490,000 43,047,000
Costs of revenues:      
Costs of revenues 18,552,000 54,504,000 49,843,000
Operating expenses:      
Restructuring expense 2,800,000    
Service Agreements and License Revenues [Member]      
Revenues:      
Revenues 26,618,000 15,757,000 27,050,000
Costs of revenues:      
Costs of revenues 18,943,000 15,059,000 25,285,000
Generation Revenues [Member]      
Revenues:      
Revenues 14,034,000 7,171,000 7,233,000
Costs of revenues:      
Costs of revenues 31,642,000 6,421,000 5,076,000
Advanced Technologies Contract Revenues [Member]      
Revenues:      
Revenues 19,619,000 14,019,000 18,336,000
Costs of revenues:      
Costs of revenues $ 12,884,000 $ 10,360,000 $ 12,728,000
[1] Due to the net loss to common stockholders in each of the years presented above, diluted earnings per share was computed without consideration to potentially dilutive instruments as their inclusion would have been antidilutive.