Segment Data - Schedule of Capital Expenditures of Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
May 31, 2026	May 31, 2025	May 31, 2024
Segment Reporting Information [Line Items]
Capital expenditures	$ 55,913	$ 50,580	$ 47,421
Total Reportable Segments
Segment Reporting Information [Line Items]
Capital expenditures	53,005	43,380	35,392
Total Reportable Segments \| Building Products
Segment Reporting Information [Line Items]
Capital expenditures	23,325	15,050	14,447
Total Reportable Segments \| Consumer Products
Segment Reporting Information [Line Items]
Capital expenditures	29,680	28,330	20,945
Unallocated Corporate
Segment Reporting Information [Line Items]
Capital expenditures	$ 2,908	$ 7,200	$ 12,029

Amount of expenditure for addition to long-lived assets included in determination of segment assets by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Excludes expenditure for addition to financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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