Customer Receivables (Components Of Customer Receivables ) (Details) - USD ($) $ in Thousands	Jul. 31, 2022	Apr. 30, 2022
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Gross customer receivables	$ 175,376	$ 168,699
Less:
Allowance for doubtful accounts	(234)	(226)
Allowance for returns and discounts	(12,695)	(11,512)
Net customer receivables	$ 162,447	$ 156,961

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
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-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant