Stock Compensation Plan - Additional Information (Details) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 29, 2018 shares	Jul. 29, 2018 USD ($) day shares	Jul. 30, 2017 USD ($) $ / shares shares	Jul. 29, 2018 USD ($) $ / shares	Jul. 30, 2017 USD ($)	Oct. 29, 2017 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, settled in cash, maximum multiplier for closing stock price on grant date		2		2
Options granted during period (shares)			809,554
Share-based compensation expense | $		$ (0.3)	$ 0.9	$ 0.7	$ 2.1
Total unrecognized compensation cost | $		2.8		$ 2.8
Weighted average vesting period				1 year 6 months
Compensation cost not yet recognized, expected in fiscal 2018 | $		0.5		$ 0.5
Compensation cost not yet recognized, expected in 2019 | $		1.5		1.5
Compensation cost not yet recognized, expected in 2020 | $		0.6		0.6
Compensation cost not yet recognized, expected in 2021 | $		$ 0.2		0.2
Certain Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted during period (shares)			809,554
Former Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, cancelled (shares)	721,731
Options, fully vested (shares)	424,710
Remaining exercisable term	12 months
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Equity instruments other than options, average stock price prior to end of vesting period, number of trading days | day		20
Grants in period, fair value | $		$ 0.9
Expected volatility rate		58.30%
Risk free interest rate		2.67%
Expected term		3 years
Performance Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, payout percentage		0.00%
Performance Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, payout percentage		200.00%
Performance Stock Units | Vesting Period One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Performance Stock Units | Vesting Period Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		2 years
Performance Stock Units | Vesting Period Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Performance Stock Units | Executive Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options granted during period (shares)		276,396
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options granted during period (shares)			240,428
Award vesting period		3 years
Grants in period, fair value | $		$ 1.1
Expected volatility rate		58.30%
Risk free interest rate		2.67%
Expected term		3 years
Equity instruments weighted average grant date fair value (usd per share) | $ / shares						$ 4.35
Restricted Stock Units | Certain Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options granted during period (shares)		343,596	166,658
Restricted Stock Units | Former Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, fully vested (shares)	159,443
Restricted Stock Units | Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options granted during period (shares)			73,770
Phantom Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options granted during period (shares)			71,311
Award vesting period		3 years
Grants in period, fair value | $				$ 0.3
Equity instruments weighted average grant date fair value (usd per share) | $ / shares				$ 4.35
Phantom Units | Executive Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options granted during period (shares)			71,311
Employee Stock Options and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Grants in period, fair value | $						$ 2.5
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility rate			40.00%
Risk free interest rate			1.91%
Expected term			6 years
Expiration period						10 years
Options, weighted average grant date fair value (usd per share) | $ / shares						$ 4.36
Expected dividend yield				0.00%
Fair value stock options grated (usd per share) | $ / shares			$ 1.79