Share-Based Compensation Plans - Schedule of Transactions Involving Outstanding Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
Apr. 28, 2019	Oct. 28, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of shares, Outstanding Beginning balance (shares)	1,600,040
Number of shares, Exercised (shares)	(200,000)
Number of shares, Forfeited (shares)	(302,792)
Number of shares, Expired (shares)	(175,055)
Number of shares, Outstanding Ending balance (shares)	922,193	1,600,040
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Weighted average exercise price, Outstanding balance (in dollars per share)	$ 5.25
Weighted average exercise price, Exercised (in dollars per share)	4.35
Weighted average exercise price, Forfeited (in dollars per share)	5.54
Weighted average exercise price, Expired (in dollars per share)	6.36
Weighted average exercise price, Outstanding balance (in dollars per share)	$ 5.74	$ 5.25
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Contractual Life (in years)	7 years 6 months 4 days	7 years 3 months 7 days
Aggregate Intrinsic Value (in thousands)	$ 343	$ 0

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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