Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2026	Mar. 29, 2025
Segment Reporting Information [Line Items]
Net sales	$ 1,193,005	$ 1,000,165
Corporate expenses	312,228	206,262
Gain on sale of business	41,407	0
Interest expense	0	(25)
Interest income	11,870	9,901
Realized and unrealized gains (losses) on short-term investments	(2,037)	(5,010)
Other expense, net	(1,232)	92
Income before income taxes	320,829	211,220
Piping Systems
Segment Reporting Information [Line Items]
Net sales	752,552	629,359
Industrial Metals
Segment Reporting Information [Line Items]
Net sales	316,828	247,790
Climate
Segment Reporting Information [Line Items]
Net sales	123,625	123,016
Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,205,570	1,014,703
Manufacturing costs	856,895	754,202
Sales and marketing expense	13,933	12,787
Distribution expense	12,142	12,330
Other segment items	27,940	11,512
Segment operating income	294,660	223,872
Operating Segments | Piping Systems
Segment Reporting Information [Line Items]
Net sales	760,528	639,683
Manufacturing costs	507,213	462,465
Sales and marketing expense	8,603	8,254
Distribution expense	11,136	11,154
Other segment items	16,566	(354)
Segment operating income	217,010	158,164
Gain on sale of business	0
Operating Segments | Industrial Metals
Segment Reporting Information [Line Items]
Net sales	321,277	251,913
Manufacturing costs	266,450	211,741
Sales and marketing expense	1,904	1,224
Distribution expense	515	704
Other segment items	8,137	8,160
Segment operating income	44,271	30,084
Gain on sale of business	0
Operating Segments | Climate
Segment Reporting Information [Line Items]
Net sales	123,765	123,107
Manufacturing costs	83,232	79,996
Sales and marketing expense	3,426	3,309
Distribution expense	491	472
Other segment items	3,237	3,706
Segment operating income	33,379	35,624
Gain on sale of business	0
Intersegment sales
Segment Reporting Information [Line Items]
Net sales	(12,565)	(14,538)
Intersegment sales | Piping Systems
Segment Reporting Information [Line Items]
Net sales	(7,976)	(10,324)
Intersegment sales | Industrial Metals
Segment Reporting Information [Line Items]
Net sales	(4,449)	(4,123)
Intersegment sales | Climate
Segment Reporting Information [Line Items]
Net sales	(140)	(91)
Corporate expenses
Segment Reporting Information [Line Items]
Corporate expenses	(23,839)	(17,610)
Gain on sale of business	41,407
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment
Segment Reporting Information [Line Items]
Gain on sale of business	41,407
Interest expense		(25)
Interest income	11,870	9,901
Realized and unrealized gains (losses) on short-term investments	(2,037)	(5,010)
Other expense, net	$ (1,232)	$ 92