Industry Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Summary of segment information [Abstract]
Net sales	$ 582,282	$ 594,099	$ 1,141,972	$ 1,171,767
Cost of goods sold	501,125	522,851	983,975	1,016,026
Depreciation and amortization	8,328	7,919	16,482	15,448
Selling, general, and administrative expense	34,814	33,487	66,157	65,089
Insurance settlement	(106,332)	0	(106,332)	(1,500)
Operating income	144,347	29,842	181,690	76,704
Interest expense	(1,101)	(2,721)	(1,697)	(5,358)
Other income, net	319	490	3,482	744
Income before income taxes	143,565	27,611	183,475	72,090
Plumbing and Refrigeration Segment [Member]
Summary of segment information [Abstract]
Net sales	328,673	331,688	640,487	647,042
Cost of goods sold	277,933	285,182	542,747	550,653
Depreciation and amortization	4,443	4,151	8,689	8,296
Selling, general, and administrative expense	20,382	19,750	40,509	38,730
Insurance settlement	(103,895)		(103,895)	(1,500)
Operating income	129,810	22,605	152,437	50,863
OEM Segment [Member]
Summary of segment information [Abstract]
Net sales	257,044	268,551	510,831	539,527
Cost of goods sold	226,596	243,646	450,476	479,846
Depreciation and amortization	3,342	3,412	6,704	6,471
Selling, general, and administrative expense	6,167	6,436	12,389	13,428
Insurance settlement	0		0	0
Operating income	20,939	15,057	41,262	39,782
Corporate and Eliminations [Member]
Summary of segment information [Abstract]
Net sales	(3,435)	(6,140)	(9,346)	(14,802)
Cost of goods sold	(3,404)	(5,977)	(9,248)	(14,473)
Depreciation and amortization	543	356	1,089	681
Selling, general, and administrative expense	8,265	7,301	13,259	12,931
Insurance settlement	(2,437)		(2,437)	0
Operating income	$ (6,402)	$ (7,820)	$ (12,009)	$ (13,941)