Stock Appreciation Rights, Deferred Compensation and Redeemable Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended
Jul. 31, 2022	Jul. 31, 2021	Apr. 30, 2022
Selling, general and administrative expenses
Deferred Compensation Liability, Current and Noncurrent [Roll Forward]
Expense related to equity based compensation arrangements	$ 2,800	$ 1,200
Stock Appreciation Rights
Deferred Compensation Liability, Current and Noncurrent [Roll Forward]
Award liability as of beginning of period	30,878
Change in fair value	2,344
Award liability as of end of period	33,222
Current liabilities related to plans	6,936		$ 1,532
Long-term liabilities related to plans	26,286		29,346
Deferred Compensation
Deferred Compensation Liability, Current and Noncurrent [Roll Forward]
Award liability as of beginning of period	2,205
Change in fair value	62
Award liability as of end of period	2,267
Current liabilities related to plans	506		0
Long-term liabilities related to plans	1,761		2,205
Redeemable Noncontrolling Interests
Deferred Compensation Liability, Current and Noncurrent [Roll Forward]
Award liability as of beginning of period	11,026
Change in fair value	433
Award liability as of end of period	11,459
Current liabilities related to plans	2,532		0
Long-term liabilities related to plans	$ 8,927		$ 11,026

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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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.

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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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