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Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 28, 2019	Jan. 27, 2019	Oct. 29, 2018	Oct. 28, 2018
Disaggregation of Revenue [Line Items]
Cumulative impact of adopting ASU			$ 426
Performance obligation, payment terms description	Customer payment terms vary by arrangement although payments are typically due within 15 - 45 days of invoicing.
Reserve balance	$ 400	$ 700
Contract assets	0			$ 0
Long-term contract liabilities	0			$ 0
Deferred fulfillment costs	$ 0
(Accumulated Deficit) Retained Earnings \| Accounting Standards Update 2014-09
Disaggregation of Revenue [Line Items]
Cumulative impact of adopting ASU			$ 426