Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Number of shares issued during the period to an employee benefit plan, such as a defined contribution or defined benefit plan.

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Long-Term Incentive Awards (Details) - USD ($)	3 Months Ended					6 Months Ended			12 Months Ended
Long-Term Incentive Awards (Details) - USD ($)	Oct. 31, 2020	Aug. 01, 2020	Oct. 26, 2019	Jul. 27, 2019	Jul. 30, 2017	Oct. 31, 2020	Oct. 26, 2019	Oct. 27, 2018	Apr. 30, 2020
Fiscal 2021 LTIP \| Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense	$ 347,000		$ 0			$ 438,000	$ 0
Exercisable period from grant date		3 years
Fiscal 2021 LTIP \| Performance based restricted stock units \| 100% Vested
Stock Based Compensation
Vesting (as a percentage)		100.00%
Fiscal 2021 LTIP \| Performance based restricted stock units \| 50% Vested
Stock Based Compensation
Vesting (as a percentage)		50.00%
Fiscal 2021 LTIP \| Performance based restricted stock units \| 250% Vested
Stock Based Compensation
Vesting (as a percentage)		250.00%
Fiscal 2021 LTIP \| Performance based restricted stock units \| Maximum
Stock Based Compensation
Stock based compensation expense						7,946,000
Fiscal 2020 LTIP \| Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense	264,000						345,000
Exercisable period from grant date				3 years
Fiscal 2020 LTIP \| Performance based restricted stock units \| 100% Vested
Stock Based Compensation
Vesting (as a percentage)				100.00%
Fiscal 2020 LTIP \| Performance based restricted stock units \| 50% Vested
Stock Based Compensation
Vesting (as a percentage)				50.00%
Fiscal 2020 LTIP \| Performance based restricted stock units \| 200% Vested
Stock Based Compensation
Vesting (as a percentage)				200.00%
Fiscal 2020 LTIP \| Performance based restricted stock units \| Maximum
Stock Based Compensation
Stock based compensation expense						4,263,000
Fiscal 2019 LTIP \| Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense	189,000		16,000				48,000	$ 264,000
Exercisable period from grant date								3 years
Fiscal 2019 LTIP \| Performance based restricted stock units \| 100% Vested
Stock Based Compensation
Vesting (as a percentage)								100.00%
Fiscal 2019 LTIP \| Performance based restricted stock units \| 50% Vested
Stock Based Compensation
Vesting (as a percentage)								50.00%
Fiscal 2019 LTIP \| Performance based restricted stock units \| 200% Vested
Stock Based Compensation
Vesting (as a percentage)								200.00%
Fiscal 2019 LTIP \| Performance based restricted stock units \| Maximum
Stock Based Compensation
Stock based compensation expense						2,478,000
Fiscal 2018 LTIP \| Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense	$ 0		$ 46,000				$ 39,000
Exercisable period from grant date					3 years
Issue of fully-vested shares of common stock to settle		16,228
Fiscal 2021 LTIP, Fiscal 2020 LTIP and Fiscal 2019 LTIP
Stock Based Compensation
Stock based compensation expense						$ 2,653,000			$ 1,607,000