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Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Jan. 31, 2018
Jan. 31, 2017
Revenues:    
Product $ 29,530 $ 1,807
Service and license 4,104 6,936
Generation 1,892 2,085
Advanced Technologies 3,087 6,174
Total revenues 38,613 17,002
Costs of revenues:    
Product 26,137 4,055
Service and license 3,406 6,266
Generation 1,609 1,115
Advanced technologies 2,826 3,753
Total costs of revenues 33,978 15,189
Gross profit 4,635 1,813
Operating expenses:    
Administrative and selling expenses 6,142 6,004
Research and development expenses 4,046 5,392
Restructuring expense   1,345
Total costs and expenses 10,188 12,741
Loss from operations (5,553) (10,928)
Interest expense (2,141) (2,267)
Other income (expense), net 476 (409)
Loss before benefit (provision) for income taxes (7,218) (13,604)
Benefit (provision) for income taxes 3,035 (81)
Net loss (4,183) (13,685)
Net loss attributable to common stockholders $ (8,446) $ (14,485)
Loss per share basic and diluted:    
Net loss per share attributable to common stockholders $ (0.12) $ (0.39)
Basic and diluted weighted average shares outstanding 72,024,811 37,613,216
Series C Preferred Stock [Member]    
Operating expenses:    
Series C preferred stock deemed dividends $ (3,463) $ 0
Series B Preferred Stock [Member]    
Operating expenses:    
Series B preferred stock dividends $ (800) $ (800)