v3.26.1
Segment Reporting - Schedule of Reconciliation of EBITDA to Net Income (Details) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 03, 2026
Mar. 28, 2025
Segment Reporting Information [Line Items]    
Net sales $ 549,824 $ 420,330
Cost of sales 467,989 344,151
Selling, general, and administrative expense 36,200 35,445
Other segment items 17,151 12,873
Segment depreciation, depletion and amortization 18,426 16,538
Segment EBITDA 46,910 44,399
Income tax expense 1,533 3,246
Interest expense - net 7,578 6,917
Net income 19,373 17,698
Performance Materials    
Segment Reporting Information [Line Items]    
Net sales 155,665 173,987
Cost of sales 124,608 125,756
Selling, general, and administrative expense 14,065 13,981
Other segment items 4,207 3,007
Segment depreciation, depletion and amortization 11,016 9,430
Segment EBITDA 23,801 40,673
Electronic Materials    
Segment Reporting Information [Line Items]    
Net sales 363,364 224,795
Cost of sales 323,566 201,057
Selling, general, and administrative expense 10,171 10,619
Other segment items 8,731 6,308
Segment depreciation, depletion and amortization 4,633 4,267
Segment EBITDA 25,529 11,078
Electronic Materials | Intersegment Eliminations    
Segment Reporting Information [Line Items]    
Net sales 2,700 2,600
Precision Optics    
Segment Reporting Information [Line Items]    
Net sales 30,795 21,548
Cost of sales 19,816 17,324
Selling, general, and administrative expense 5,207 4,386
Other segment items 3,384 3,675
Segment depreciation, depletion and amortization 2,286 2,355
Segment EBITDA 4,674 (1,482)
Other    
Segment Reporting Information [Line Items]    
Net sales 0 0
Cost of sales (1) 14
Selling, general, and administrative expense 6,757 6,459
Other segment items 829 (117)
Segment depreciation, depletion and amortization 491 486
Segment EBITDA $ (7,094) $ (5,870)