Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023	Dec. 30, 2023
Summary of segment information [Abstract]
Net sales	$ 997,831	$ 819,792	$ 2,845,230	$ 2,687,968
Cost of goods sold	722,469	579,058	2,056,162	1,897,128
Depreciation and amortization	11,710	9,631	30,897	30,704
Selling, general, and administrative expense	59,619	48,295	161,993	156,988
Gain on sale of assets	2,667	0	3,953	0
Gain on sale of business	0	(4,137)	0	(4,137)
Asset impairments	0	5,934	0	5,934
Gain on insurance settlement	0	0	0	(19,466)
Operating income	206,700	181,011	600,131	620,817
Interest expense	(113)	(230)	(335)	(508)
Interest income	11,145	10,599	42,773	24,566
Realized and unrealized losses on short-term investments	164	(2,368)	529	20,362
Other (expense) income, net	(122)	(47)	(848)	2,120
Income before income taxes	217,774	188,965	642,250	667,357
Assets	3,206,132		3,206,132		$ 2,759,301
Operating Segments
Summary of segment information [Abstract]
Net sales	1,020,380	829,112	2,897,767	2,718,004
Operating Segments | Piping Systems
Summary of segment information [Abstract]
Net sales	653,884	568,151	1,932,521	1,868,635
Cost of goods sold	459,818	394,736	1,381,585	1,315,212
Depreciation and amortization	5,082	5,025	14,574	15,835
Selling, general, and administrative expense	25,383	21,847	67,542	76,049
Gain on sale of assets	0		(281)
Gain on sale of business		0		0
Asset impairments		5,934		5,934
Gain on insurance settlement				0
Operating income	163,601	140,609	468,539	455,605
Assets	1,139,615		1,139,615		1,029,821
Operating Segments | Industrial Metals
Summary of segment information [Abstract]
Net sales	238,014	141,012	589,422	452,512
Cost of goods sold	204,406	119,108	490,275	375,375
Depreciation and amortization	3,976	1,835	8,264	5,411
Selling, general, and administrative expense	5,435	3,848	12,722	10,319
Gain on sale of assets	0		0
Gain on sale of business		0		0
Asset impairments		0		0
Gain on insurance settlement				0
Operating income	24,197	16,221	78,161	61,407
Assets	811,792		811,792		157,761
Operating Segments | Climate
Summary of segment information [Abstract]
Net sales	128,482	119,949	375,824	396,857
Cost of goods sold	81,579	76,133	239,461	242,009
Depreciation and amortization	1,650	1,618	4,891	5,973
Selling, general, and administrative expense	7,152	7,352	21,803	22,440
Gain on sale of assets	2,667		2,667
Gain on sale of business		0		0
Asset impairments		0		0
Gain on insurance settlement				(19,466)
Operating income	40,768	34,846	112,336	145,901
Assets	268,534		268,534		252,561
Corporate and Eliminations
Summary of segment information [Abstract]
Net sales	(22,549)	(9,320)	(52,537)	(30,036)
Cost of goods sold	(23,334)	(10,919)	(55,159)	(35,468)
Depreciation and amortization	1,002	1,153	3,168	3,485
Selling, general, and administrative expense	21,649	15,248	59,926	48,180
Gain on sale of assets	0		1,567
Gain on sale of business		(4,137)		(4,137)
Asset impairments		0		0
Gain on insurance settlement				0
Operating income	(21,866)	$ (10,665)	(58,905)	$ (42,096)
Assets	$ 986,191		$ 986,191		$ 1,319,158