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Long-Term Incentive Awards (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Apr. 30, 2021
Fiscal 2022 LTIP
Stock Based Compensation
Stock based compensation expense	$ 308,000	$ 0
Fiscal 2022 LTIP | Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense	$ 13,314,000
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 2021 LTIP | Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense	$ 65,000	$ 91,000
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	7,337,000
Fiscal 2020 LTIP | Performance based restricted stock units
Stock Based Compensation
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	3,983,000
Fiscal 2019 LTIP | Performance based restricted stock units
Stock Based Compensation
Exercisable period from grant date			3 years
Fiscal 2018 LTIP | Performance based restricted stock units
Stock Based Compensation
Stock based compensation expense	$ 0	$ 75,000
Issue of fully-vested shares of common stock to settle	12,101

X

- Definition

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

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