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Revenue Recognition - Schedule of Cumulative Effect and Impacts of Topic 606 on Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | Jul. 31, 2019 | Nov. 01, 2018 | Oct. 31, 2018
--- | --- | --- | ---
ASSETS |  |  |
Unbilled receivables | $ 8,186 |  | $ 13,759
Other assets | 10,019 |  | 13,505
LIABILITIES |  |  |
Accrued liabilities | 8,582 |  | 7,632
Deferred revenue, current portion | 15,650 |  | 11,347
Long-term deferred revenue | 22,190 |  | 16,793
EQUITY |  |  |
Accumulated deficit | (1,039,910) |  | $ (990,867)
Topic 606 [Member] |  |  |
ASSETS |  |  |
Unbilled receivables |  | $ 14,230 |
Other assets |  | 13,373 |
LIABILITIES |  |  |
Accrued liabilities |  | 8,627 |
Deferred revenue, current portion |  | 11,107 |
Long-term deferred revenue |  | 23,031 |
EQUITY |  |  |
Accumulated deficit |  | (997,521) |
Adjustments Due to Topic 606 [Member] | Topic 606 [Member] |  |  |
ASSETS |  |  |
Unbilled receivables | (110) | 471 |
Other assets | (901) | (132) |
LIABILITIES |  |  |
Accrued liabilities | (939) | 995 |
Deferred revenue, current portion | (1,518) | (240) |
Long-term deferred revenue | (7,083) | 6,238 |
EQUITY |  |  |
Accumulated deficit | 8,529 | $ (6,654) |
Balances Without Adoption of ASC 606 [Member] | Topic 606 [Member] |  |  |
ASSETS |  |  |
Unbilled receivables | 8,076 |  |
Other assets | 9,118 |  |
LIABILITIES |  |  |
Accrued liabilities | 7,643 |  |
Deferred revenue, current portion | 14,132 |  |
Long-term deferred revenue | 15,107 |  |
EQUITY |  |  |
Accumulated deficit | $ (1,031,381) |  |

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