Segment Data - Financial Information for Reportable Segments (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Segment Reporting Information [Line Items]
Net sales	$ 1,245,703	$ 1,418,496	$ 1,309,189
Capital expenditures	47,421	38,683	58,158
Depreciation and amortization	48,663	45,975	42,645
Impairment of long-lived assets	32,975	484
Restructuring and other expense (income), net	29,327	(367)	(2,616)
Separation costs	12,705	6,534
Equity income	167,716	153,262	183,855
Adjusted EBITDA from continuing operations	74,007	160,286	210,649
Total assets of continuing operations	1,638,637	3,650,918
Total assets of continuing operations	1,638,637	1,890,122
Unallocated Corporate and Other
Segment Reporting Information [Line Items]
Net sales	131,471	146,118	130,954
Capital expenditures	12,029	7,228	13,719
Depreciation and amortization	8,347	7,638	8,546
Impairment of long-lived assets	32,203
Restructuring and other expense (income), net	29,247	(1,177)	(2,581)
Separation costs	12,705	6,534
Equity income	4,590	(13,165)	7,357
Adjusted EBITDA from continuing operations	(28,727)	(13,542)	(12,894)
Total
Segment Reporting Information [Line Items]
Adjusted EBITDA from continuing operations	250,999	306,025	335,024
Total Reportable Segments
Segment Reporting Information [Line Items]
Net sales	1,114,232	1,272,378	1,178,235
Capital expenditures	35,392	31,455	44,439
Depreciation and amortization	40,316	38,337	34,099
Impairment of long-lived assets	772	484
Restructuring and other expense (income), net	80	810	(35)
Equity income	163,126	166,427	176,498
Adjusted EBITDA from continuing operations	279,726	319,567	347,918
Total assets of continuing operations	1,230,549	1,251,080
Total Reportable Segments | Consumer products
Segment Reporting Information [Line Items]
Net sales	495,259	555,309	504,870
Capital expenditures	14,447	8,612	7,388
Depreciation and amortization	16,510	16,210	13,356
Restructuring and other expense (income), net		213
Adjusted EBITDA from continuing operations	69,598	97,370	109,282
Total assets of continuing operations	557,826	544,911
Total Reportable Segments | Building Products
Segment Reporting Information [Line Items]
Net sales	618,973	717,069	673,365
Capital expenditures	20,945	22,843	37,051
Depreciation and amortization	23,806	22,127	20,743
Impairment of long-lived assets	772	484
Restructuring and other expense (income), net	80	597	(35)
Equity income	163,126	166,427	176,498
Adjusted EBITDA from continuing operations	210,128	222,197	$ 238,636
Total assets of continuing operations	672,723	706,169
Unallocated Corporate and Other
Segment Reporting Information [Line Items]
Total assets of continuing operations	$ 408,088	$ 639,042