v3.26.1
Segment Operations - Financial Information for Reportable Operating Segments (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Feb. 28, 2026
Feb. 28, 2025
Feb. 28, 2026
Feb. 28, 2025
May 31, 2025
Segment Reporting Information [Line Items]          
Net sales $ 378,677 $ 304,524 $ 1,009,836 $ 835,878  
Cost of goods sold 269,203 215,277 733,449 610,077  
SG&A 75,745 63,005 217,031 196,959  
Restructuring and other expense (income), net [1] 2,186 5,374 6,306 9,152  
Other segment items [2] 2,144 370 7,965 1,341  
Equity in net income (loss) of unconsolidated affiliates 30,715 32,081 96,490 102,129  
Earnings (loss) before income taxes 60,114 52,579 141,575 120,478  
Reconciling items to adjusted EBITDA          
Amortization of inventory step-up [1] 1,500   3,651 1,477  
Depreciation and amortization [1] 14,552 11,950 41,402 35,707  
Interest expense (income) [1] 1,828 628 3,363 2,150  
Stock-based compensation [1] 3,752 2,924 10,504 10,122  
Non-cash charges in miscellaneous income [1] 340   4,534    
Net loss attributable to noncontrolling interest [1] 343 324 969 820  
Adjusted EBITDA [1] 84,615 73,779 212,304 179,906  
Total assets 1,823,538   1,823,538   $ 1,695,152
Total Reportable Operating Segments          
Segment Reporting Information [Line Items]          
Net sales 378,677 304,524 1,009,836 835,878  
Cost of goods sold 269,143 215,226 733,338 609,971  
SG&A 65,617 55,972 189,025 169,947  
Restructuring and other expense (income), net [1] 99 579 564 1,382  
Other segment items [2] (81) (397) 282 (567)  
Equity in net income (loss) of unconsolidated affiliates 32,822 34,498 101,570 105,438  
Earnings (loss) before income taxes 76,721 67,642 188,197 160,583  
Reconciling items to adjusted EBITDA          
Amortization of inventory step-up [1] 1,500   3,651 1,477  
Depreciation and amortization [1] 14,351 11,763 40,804 35,138  
Interest expense (income) [1] (33) 4 224 33  
Stock-based compensation [1] 1,296 1,500 4,244 4,029  
Net loss attributable to noncontrolling interest [1] 343 324 969 820  
Adjusted EBITDA [1] 94,277 81,812 238,653 203,462  
Total assets 1,693,292   1,693,292   1,327,024
Total Reportable Operating Segments | Consumer Products          
Segment Reporting Information [Line Items]          
Net sales 154,827 139,714 393,689 374,057  
Cost of goods sold 96,172 88,069 257,713 242,040  
SG&A 28,180 28,406 83,891 85,975  
Restructuring and other expense (income), net [1] (1)   12    
Other segment items [2] (25) 12 (7) 20  
Earnings (loss) before income taxes 30,501 23,227 52,080 46,022  
Reconciling items to adjusted EBITDA          
Depreciation and amortization [1] 3,969 4,314 11,776 12,982  
Interest expense (income) [1]     (4)    
Stock-based compensation [1] 640 760 2,054 2,060  
Net loss attributable to noncontrolling interest [1] 343 324 969 820  
Adjusted EBITDA [1] 35,452 28,625 66,887 61,884  
Total assets 537,382   537,382   531,187
Total Reportable Operating Segments | Building Products          
Segment Reporting Information [Line Items]          
Net sales 223,850 164,810 616,147 461,821  
Cost of goods sold 172,971 127,157 475,625 367,931  
SG&A 37,437 27,566 105,134 83,972  
Restructuring and other expense (income), net [1] 100 579 552 1,382  
Other segment items [2] (56) (409) 289 (587)  
Equity in net income (loss) of unconsolidated affiliates 32,822 34,498 101,570 105,438  
Earnings (loss) before income taxes 46,220 44,415 136,117 114,561  
Reconciling items to adjusted EBITDA          
Amortization of inventory step-up [1] 1,500   3,651 1,477  
Depreciation and amortization [1] 10,382 7,449 29,028 22,156  
Interest expense (income) [1] (33) 4 228 33  
Stock-based compensation [1] 656 740 2,190 1,969  
Adjusted EBITDA [1] 58,825 53,187 171,766 141,578  
Total assets 1,155,910   1,155,910   795,837
Other          
Segment Reporting Information [Line Items]          
Other segment items [2] 340   4,534    
Equity in net income (loss) of unconsolidated affiliates (2,107) (2,417) (5,080) (3,309)  
Earnings (loss) before income taxes (2,447) (2,417) (9,614) (3,309)  
Reconciling items to adjusted EBITDA          
Non-cash charges in miscellaneous income [1] 340   4,534    
Adjusted EBITDA [1] (2,107) (2,417) (5,080) (3,309)  
Unallocated Corp          
Segment Reporting Information [Line Items]          
Cost of goods sold 60 51 111 106  
SG&A 10,128 7,033 28,006 27,012  
Restructuring and other expense (income), net [1] 2,087 4,795 5,742 7,770  
Other segment items [2] 1,885 767 3,149 1,908  
Earnings (loss) before income taxes (14,160) (12,646) (37,008) (36,796)  
Reconciling items to adjusted EBITDA          
Depreciation and amortization [1] 201 187 598 569  
Interest expense (income) [1] 1,861 624 3,139 2,117  
Stock-based compensation [1] 2,456 1,424 6,260 6,093  
Adjusted EBITDA [1] (7,555) $ (5,616) (21,269) $ (20,247)  
Total assets $ 130,246   $ 130,246   $ 368,128
[1] See “Use of Non-GAAP Financial Measures and Definitions” for additional information.
[2] Except as noted herein, Other segment items consist of non-operating activity included in adjusted EBITDA. For the current year period, Other segment items also included certain non-cash charges in Miscellaneous income (expense), net related to the divestiture of the composite assets of our SES joint venture, including the unrealized loss on the common shares of Hexagon Composites and Hexagon Purus that we received as consideration. These charges were excluded from adjusted EBITDA as shown in the Reconciling items to adjusted EBITDA section in the tables above for the current year period. See “Use of Non-GAAP Financial Measures and Definitions” for additional information.