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 ($)		3 Months Ended					12 Months Ended
Long-Term Incentive Awards (Details) - USD ($)	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020	Jul. 27, 2019	Jul. 28, 2018	Jul. 30, 2017	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Stock Based Compensation
Stock based compensation expense							$ 5,390,000	$ 6,932,000	$ 6,227,000
Exercisable period from grant date							3 years
LTIP
Stock Based Compensation
Stock based compensation expense							$ 4,594,000	5,177,000
Fiscal 2022 LTIP \| Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense							752,000
Exercisable period from grant date		3 years
Fiscal 2022 LTIP \| Performance based restricted stock units \| 100% Vested
Stock Based Compensation
Vesting (as a percentage)		100.00%
Fiscal 2022 LTIP \| Performance based restricted stock units \| 50% Vested
Stock Based Compensation
Vesting (as a percentage)		50.00%
Fiscal 2022 LTIP \| Performance based restricted stock units \| 250% Vested
Stock Based Compensation
Vesting (as a percentage)		250.00%
Fiscal 2022 LTIP \| Performance based restricted stock units \| Maximum
Stock Based Compensation
Stock based compensation expense							10,473,000
Fiscal 2021 LTIP \| Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense							(634,000)	1,072,000
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							6,021,000
Fiscal 2020 LTIP \| Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense							(701,000)	620,000	649,000
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							3,335,000
Fiscal 2019 LTIP
Stock Based Compensation
Stock based compensation expense							0
Fiscal 2019 LTIP \| Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense							368,000	386,000
Exercisable period from grant date					3 years
Issue of fully-vested shares of common stock to settle		12,101
Fiscal 2018 LTIP \| Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense							$ 0	$ 0	$ 193,000
Exercisable period from grant date						3 years
Issue of fully-vested shares of common stock to settle	16,228