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Revenue Recognition - Schedule of Impacts of Topic 606 on Consolidated Statements of Operations and Comprehensive Loss (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2019 | Apr. 30, 2018 | Apr. 30, 2019 | Apr. 30, 2018
Revenue Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | $ 9,216,000 | $ 20,830,000 | $ 26,999,000 | $ 59,443,000
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
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
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)
Adjustments Due to Topic 606 [Member] | Topic 606 [Member] |  |  |  |
Revenue Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | 792,000 |  | 2,340,000 |
Costs of revenues | 767,000 |  | 1,042,000 |
Gross (loss) profit | 25,000 |  | 1,298,000 |
Loss from operations | 25,000 |  | 1,298,000 |
Loss before benefit (provision) for income taxes | 25,000 |  | 1,298,000 |
Net loss | 25,000 |  | 1,298,000 |
Balances Without Adoption of ASC 606 [Member] | Topic 606 [Member] |  |  |  |
Revenue Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Total revenues | 10,008,000 |  | 29,339,000 |
Costs of revenues | 13,623,000 |  | 33,886,000 |
Gross (loss) profit | (3,615,000) |  | (4,547,000) |
Administrative and selling expenses | 9,805,000 |  | 16,564,000 |
Research and development expenses | 4,178,000 |  | 10,458,000 |
Loss from operations | (17,598,000) |  | (31,569,000) |
Interest expense | (1,807,000) |  | (4,271,000) |
Other income (expense), net | (31,000) |  | 129,000 |
Loss before benefit (provision) for income taxes | (19,436,000) |  | (35,711,000) |
(Provision) benefit for income taxes | (69,000) |  | (69,000) |
Net loss | $ (19,505,000) |  | $ (35,780,000) |

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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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