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Stock-Based Compensation (Details) - USD ($)			12 Months Ended
	Sep. 24, 2021	Sep. 29, 2011	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Stock Based Compensation
Stock based compensation expense			$ 10,765,000	$ 5,390,000	$ 6,932,000
Exercisable period from grant date			3 years
Options granted (in shares)			0	0	0
Maximum
Stock Based Compensation
Amount that may be paid in cash as a performance-based award to one participant during the inital period	$ 700,000
Restated 2006 Plan
Stock Based Compensation
Number of shares that may be granted to one participant during any twelve month period		2,000,000
Amount that may be paid in cash as a performance-based award to one participant during any twelve month period		$ 5,000,000
Restated 2006 Plan | Maximum
Stock Based Compensation
Number of shares authorized to be issued pursuant to awards		4,884,157
Restated 2006 Plan | Incentive stock options | Minimum
Stock Based Compensation
Percentage of the fair market value on date of grant		100.00%
2001 Plan
Stock Based Compensation
Percentage of the fair market value on date of grant	100.00%
2001 Plan | Maximum
Stock Based Compensation
Amount that may be paid in cash as a performance-based award to one participant during any twelve month period	$ 500,000
1992 Plan | Stock options
Stock Based Compensation
Exercisable period from grant date			5 years

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- Definition

The highest aggregate amount that may be paid in cash to a participant as a performance-based award per period.

+ References

No definition available.

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The highest aggregate amount that may be paid in cash to a participant as a performance-based award in the initial year.

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- Definition

The highest aggregate number of shares with respect to one or more awards that may be granted to a participant under the plan per period.

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Gross number of share options (or share units) granted during the period.

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Purchase price of common stock expressed as a percentage of its fair value.

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