Stock Appreciation Rights, Deferred Compensation and Redeemable Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended
Jul. 31, 2023	Jul. 31, 2022	Apr. 30, 2023
Selling, general and administrative expenses
Deferred Compensation Liability, Current and Noncurrent [Roll Forward]
Expense related to equity based compensation arrangements	$ 1,700	$ 2,800
Stock Appreciation Rights
Deferred Compensation Liability, Current and Noncurrent [Roll Forward]
Award liability as of beginning of period	32,432
Amounts redeemed	(1,727)
Change in fair value	1,218
Award liability as of end of period	31,923
Current liabilities related to plans	6,247		$ 7,446
Long-term liabilities related to plans	25,676		24,986
Deferred Compensation
Deferred Compensation Liability, Current and Noncurrent [Roll Forward]
Award liability as of beginning of period	2,407
Amounts redeemed	(585)
Change in fair value	72
Award liability as of end of period	1,894
Current liabilities related to plans	0		545
Long-term liabilities related to plans	1,894		1,862
Redeemable Noncontrolling Interests
Deferred Compensation Liability, Current and Noncurrent [Roll Forward]
Award liability as of beginning of period	12,002
Amounts redeemed	(2,931)
Change in fair value	408
Award liability as of end of period	9,479
Current liabilities related to plans	0		2,726
Long-term liabilities related to plans	$ 9,479		$ 9,276

Deferred Compensation Liability, Current and Noncurrent

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- Definition

Amount of expense on certain equity based compensation arrangements, such as stock appreciation rights, deferred compensation agreements and liabilities to noncontrolling interest holders.

+ References

No definition available.

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable within one year (or the operating cycle, if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable after one year (or the operating cycle, if longer).

+ References

No definition available.

+ Details

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

+ References

No definition available.

+ Details

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- Definition

Amount of addition (reduction) to the amount at which a liability could be incurred (settled) in a current transaction between willing parties.

+ References

No definition available.

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- Definition

Amount of cash paid to settle liability for award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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