v3.26.1
Segment Data - Financial Information for Operating Segments (Detail) - USD ($)
$ in Thousands
 12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Segment Reporting Information [Line Items]      
Net sales $ 1,381,292 $ 1,153,762 $ 1,245,703
Cost of goods sold 1,003,017 834,727 960,684
SG&A 294,966 268,413 283,471
Impairment of goodwill and long-lived assets   50,813 [1] 32,975
Restructuring and other expense, net [1] 7,100    
Restructuring and other expense (income), net 7,100 10,524 [1] 29,327 [1]
Separation costs [1]     12,705
Other segment items [2] 9,492 [1] 5,312 20,250
Equity in net income of unconsolidated affiliates 134,631 144,836 167,716
Earnings (loss) before income taxes from continuing operations 201,348 128,809 74,007
Reconciling items to Adjusted EBITDA from continuing operations      
Amortization of inventory step-up [1] 5,151 1,477 50
Depreciation and amortization [1] 57,272 48,262 48,663
Interest (income) expense [1] 6,248 2,090 1,587
Stock-based compensation [1] 13,734 13,521 13,155
Corporate costs eliminated at Separation [1]     19,343
Impairment of long-lived assets [1]     32,975
Non-cash losses in miscellaneous income (expense), net [1] 3,925 5,000 19,180
Non-recurring (gain) loss in equity income [1]   3,387 (1,740)
Loss on extinguishment of debt [1]     1,534
Net loss attributable to noncontrolling interest [1],[3] 1,050 1,083 263
Adjusted EBITDA from continuing operations [1] 295,828 264,966 251,049
Total assets 1,848,064 1,695,152  
Total Reportable Segments      
Segment Reporting Information [Line Items]      
Net sales 1,381,292 1,153,762 1,114,232
Cost of goods sold 1,002,903 834,621 832,380
SG&A 255,461 230,864 220,969
Impairment of goodwill and long-lived assets   50,813 [1] 772
Restructuring and other expense, net [1] 1,084    
Restructuring and other expense (income), net [1]   1,500 (1,286)
Other segment items [2] 63 [1] (753) (10)
Equity in net income of unconsolidated affiliates 139,940 150,895 163,126
Earnings (loss) before income taxes from continuing operations 261,721 187,612 224,533
Reconciling items to Adjusted EBITDA from continuing operations      
Amortization of inventory step-up [1] 5,151 1,477 50
Depreciation and amortization [1] 56,473 47,488 40,317
Interest (income) expense [1] 377 (78)  
Stock-based compensation [1] 5,611 5,612 4,790
Corporate costs eliminated at Separation [1]     9,357
Impairment of long-lived assets [1]     772
Non-recurring (gain) loss in equity income [1]     980
Net loss attributable to noncontrolling interest [1] 1,050 1,083 263
Adjusted EBITDA from continuing operations [1] 331,467 295,507 279,776
Total assets 1,706,215 1,327,024  
Total Reportable Segments | Building Products      
Segment Reporting Information [Line Items]      
Net sales 861,456 654,137 618,973
Cost of goods sold 665,637 510,962 497,311
SG&A 144,486 116,183 107,009
Impairment of goodwill and long-lived assets   763 [1] 772
Restructuring and other expense, net [1] 1,074    
Restructuring and other expense (income), net [1]   1,500 714
Other segment items [2] 55 [1] (780) (88)
Equity in net income of unconsolidated affiliates 139,940 150,895 163,126
Earnings (loss) before income taxes from continuing operations 190,144 176,404 176,381
Reconciling items to Adjusted EBITDA from continuing operations      
Amortization of inventory step-up [1] 5,151 1,477  
Depreciation and amortization [1] 40,684 30,070 23,805
Interest (income) expense [1] 383 (78)  
Stock-based compensation [1] 2,874 2,695 2,826
Corporate costs eliminated at Separation [1]     4,650
Impairment of long-lived assets [1]     772
Non-recurring (gain) loss in equity income [1]     980
Adjusted EBITDA from continuing operations [1] 240,310 212,831 210,128
Total assets 1,170,522 795,837  
Total Reportable Segments | Consumer Products      
Segment Reporting Information [Line Items]      
Net sales 519,836 499,625 495,259
Cost of goods sold 337,266 323,659 335,069
SG&A 110,975 114,681 113,960
Impairment of goodwill and long-lived assets [1]   50,050  
Restructuring and other expense, net [1] 10    
Restructuring and other expense (income), net [1]     (2,000)
Other segment items [2] 8 [1] 27 78
Earnings (loss) before income taxes from continuing operations 71,577 11,208 48,152
Reconciling items to Adjusted EBITDA from continuing operations      
Amortization of inventory step-up [1]     50
Depreciation and amortization [1] 15,789 17,418 16,512
Interest (income) expense [1] (6)    
Stock-based compensation [1] 2,737 2,917 1,964
Corporate costs eliminated at Separation [1]     4,707
Net loss attributable to noncontrolling interest [1] 1,050 1,083 263
Adjusted EBITDA from continuing operations [1] 91,157 82,676 69,648
Total assets 535,693 531,187  
Other      
Segment Reporting Information [Line Items]      
Net sales     131,471
Cost of goods sold     129,061
SG&A     16,259
Impairment of goodwill and long-lived assets     32,203
Restructuring and other expense (income), net [1]     30,613
Other segment items [2] 3,925 [1] 5,000 17,799
Equity in net income of unconsolidated affiliates (5,309) (6,059) 4,590
Earnings (loss) before income taxes from continuing operations (9,234) (11,059) (89,874)
Reconciling items to Adjusted EBITDA from continuing operations      
Depreciation and amortization [1]     7,283
Impairment of long-lived assets [1]     32,203
Non-cash losses in miscellaneous income (expense), net [1] 3,925 5,000 19,180
Non-recurring (gain) loss in equity income [1]   3,387 (2,720)
Adjusted EBITDA from continuing operations [1] (5,309) (2,672) (3,315)
Unallocated Corporate      
Segment Reporting Information [Line Items]      
Cost of goods sold 114 106 (757)
SG&A 39,505 37,549 46,243
Restructuring and other expense, net [1] 6,016 9,024  
Separation costs [1]     12,705
Other segment items [2] 5,504 [1] 1,065 2,461
Earnings (loss) before income taxes from continuing operations (51,139) (47,744) (60,652)
Reconciling items to Adjusted EBITDA from continuing operations      
Depreciation and amortization [1] 799 774 1,063
Interest (income) expense [1] 5,871 2,168 1,587
Stock-based compensation [1] 8,123 7,909 8,365
Corporate costs eliminated at Separation [1]     9,986
Loss on extinguishment of debt [1]     1,534
Adjusted EBITDA from continuing operations [1] (30,330) (27,869) $ (25,412)
Total assets $ 141,849 $ 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 from continuing operations. In fiscal 2026 Other segment items also included certain non-cash losses in Miscellaneous 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 from continuing operations as shown in the Reconciling items to adjusted EBITDA from continuing operations section in the tables above for fiscal 2026. See “Use of Non-GAAP Financial Measures and Definitions” for additional information.
[3] Net earnings attributable to noncontrolling interests are not taxable to us.