Stock-Based Compensation - Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Oct. 23, 2021	Oct. 24, 2020	Oct. 23, 2021	Oct. 24, 2020
Stock-based compensation expense recognized for outstanding grants
Equity-based awards expense	$ 3,894	$ 4,120	$ 6,354	$ 6,167
Liability-based awards expense	61	754	(623)	1,338
Total stock-based compensation expense	$ 3,955	$ 4,874	$ 5,731	$ 7,505

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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