CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME – UNAUDITED (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
Jul. 31, 2026	Jul. 31, 2025
Other comprehensive (loss) income:
Unrealized retirement costs, net of tax benefit (expense)	$ (636)	$ (107)
Unrealized gain (loss) on interest rate swaps, net of tax (expense) benefit	$ (203)	$ (706)

Amount of tax expense (benefit) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-12

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration