Segment Reporting - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2026	Mar. 28, 2025
Disaggregation of Revenue [Line Items]
Net sales	$ 549,824	$ 420,330
Semiconductor
Disaggregation of Revenue [Line Items]
Net sales	318,362	188,152
Industrial
Disaggregation of Revenue [Line Items]
Net sales	51,857	47,305
Aerospace and defense
Disaggregation of Revenue [Line Items]
Net sales	59,006	50,033
Consumer electronics
Disaggregation of Revenue [Line Items]
Net sales	30,970	49,236
Automotive
Disaggregation of Revenue [Line Items]
Net sales	19,230	18,263
Energy
Disaggregation of Revenue [Line Items]
Net sales	46,653	36,650
Life sciences
Disaggregation of Revenue [Line Items]
Net sales	(1,531)	12,141
Other
Disaggregation of Revenue [Line Items]
Net sales	25,277	18,550
Performance Materials
Disaggregation of Revenue [Line Items]
Net sales	155,665	173,987
Performance Materials \| Semiconductor
Disaggregation of Revenue [Line Items]
Net sales	2,306	3,628
Performance Materials \| Industrial
Disaggregation of Revenue [Line Items]
Net sales	33,199	31,277
Performance Materials \| Aerospace and defense
Disaggregation of Revenue [Line Items]
Net sales	43,552	42,090
Performance Materials \| Consumer electronics
Disaggregation of Revenue [Line Items]
Net sales	23,254	45,035
Performance Materials \| Automotive
Disaggregation of Revenue [Line Items]
Net sales	17,046	16,202
Performance Materials \| Energy
Disaggregation of Revenue [Line Items]
Net sales	13,317	16,420
Performance Materials \| Life sciences
Disaggregation of Revenue [Line Items]
Net sales	1,859	2,575
Performance Materials \| Other
Disaggregation of Revenue [Line Items]
Net sales	21,132	16,760
Electronic Materials
Disaggregation of Revenue [Line Items]
Net sales	363,364	224,795
Electronic Materials \| Semiconductor
Disaggregation of Revenue [Line Items]
Net sales	314,258	183,749
Electronic Materials \| Industrial
Disaggregation of Revenue [Line Items]
Net sales	10,980	9,755
Electronic Materials \| Aerospace and defense
Disaggregation of Revenue [Line Items]
Net sales	5,424	1,702
Electronic Materials \| Consumer electronics
Disaggregation of Revenue [Line Items]
Net sales	3,640	1,108
Electronic Materials \| Automotive
Disaggregation of Revenue [Line Items]
Net sales	240	726
Electronic Materials \| Energy
Disaggregation of Revenue [Line Items]
Net sales	33,336	20,230
Electronic Materials \| Life sciences
Disaggregation of Revenue [Line Items]
Net sales	(8,596)	5,874
Electronic Materials \| Other
Disaggregation of Revenue [Line Items]
Net sales	4,082	1,651
Precision Optics
Disaggregation of Revenue [Line Items]
Net sales	30,795	21,548
Precision Optics \| Semiconductor
Disaggregation of Revenue [Line Items]
Net sales	1,798	775
Precision Optics \| Industrial
Disaggregation of Revenue [Line Items]
Net sales	7,678	6,273
Precision Optics \| Aerospace and defense
Disaggregation of Revenue [Line Items]
Net sales	10,030	6,241
Precision Optics \| Consumer electronics
Disaggregation of Revenue [Line Items]
Net sales	4,076	3,093
Precision Optics \| Automotive
Disaggregation of Revenue [Line Items]
Net sales	1,944	1,335
Precision Optics \| Energy
Disaggregation of Revenue [Line Items]
Net sales	0	0
Precision Optics \| Life sciences
Disaggregation of Revenue [Line Items]
Net sales	5,206	3,692
Precision Optics \| Other
Disaggregation of Revenue [Line Items]
Net sales	63	139
Other
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other \| Semiconductor
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other \| Industrial
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other \| Aerospace and defense
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other \| Consumer electronics
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other \| Automotive
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other \| Energy
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other \| Life sciences
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other \| Other
Disaggregation of Revenue [Line Items]
Net sales	$ 0	$ 0