Stock-Based Compensation - Expense (Details) - USD ($) $ in Thousands	3 Months Ended
Jul. 24, 2021	Jul. 25, 2020
Stock-based compensation expense recognized for outstanding grants
Equity-based awards expense	$ 2,460	$ 2,047
Liability-based awards expense	(684)	584
Total stock-based compensation expense	$ 1,776	$ 2,631

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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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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