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Revenue Recognition - Schedule of Cumulative Effect and Impacts of Topic 606 on Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Nov. 01, 2018	Oct. 31, 2018
ASSETS
Unbilled receivables	$ 7,684		$ 13,759
Other assets	9,489		13,505
LIABILITIES
Accrued liabilities	11,452		7,632
Deferred revenue, current portion	11,471		11,347
Long-term deferred revenue	28,705		16,793
EQUITY
Accumulated deficit	(1,075,089)		$ (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	97	471
Other assets	(1,024)	(132)
LIABILITIES
Accrued liabilities	(1,097)	995
Deferred revenue, current portion	488	(240)
Long-term deferred revenue	(9,579)	6,238
EQUITY
Accumulated deficit	9,261	$ (6,654)
Balances Without Adoption of ASC 606 [Member] | Topic 606 [Member]
ASSETS
Unbilled receivables	7,781
Other assets	8,465
LIABILITIES
Accrued liabilities	10,355
Deferred revenue, current portion	11,959
Long-term deferred revenue	19,126
EQUITY
Accumulated deficit	$ (1,065,828)

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