Industry Segments (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 01, 2011	Sep. 25, 2010	Oct. 01, 2011	Sep. 25, 2010	Dec. 25, 2010
Segment Reporting Information [Line Items]
Net sales	$ 585,809	$ 507,240	$ 1,926,413	$ 1,532,896
Cost of goods sold	523,984	437,597	1,687,735	1,317,290
Depreciation and amortization	8,716	9,934	27,581	30,372
Selling, general, and administrative expense	34,245	28,810	102,944	99,601
Litigation settlement	0	0	(10,500)	0
Insurance gain	0	(12)	0	21,284	21,300
Operating income	18,864	30,887	118,653	106,917
Interest expense	(2,822)	(3,072)	(9,004)	(8,568)
Other income (expense), net	102	30	1,425	(2,348)
Income before income taxes	16,144	27,845	111,074	96,001
Plumbing and Refrigeration Segment [Member]
Segment Reporting Information [Line Items]
Net sales	325,776	282,735	1,053,434	825,114
Cost of goods sold	285,242	245,013	904,470	695,987
Depreciation and amortization	4,859	6,082	16,042	18,895
Selling, general, and administrative expense	21,791	20,117	64,565	59,806
Litigation settlement			0
Insurance gain		12		(21,284)
Operating income	13,884	11,511	68,357	71,710
OEM Segment [Member]
Segment Reporting Information [Line Items]
Net sales	266,560	228,981	899,982	718,965
Cost of goods sold	245,223	196,894	809,959	631,988
Depreciation and amortization	3,519	3,594	10,590	10,700
Selling, general, and administrative expense	5,646	5,499	18,799	20,220
Litigation settlement			0
Insurance gain		0		0
Operating income	12,172	22,994	60,634	56,057
Corporate Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	(6,527)	(4,476)	(27,003)	(11,183)
Cost of goods sold	(6,481)	(4,310)	(26,694)	(10,685)
Depreciation and amortization	338	258	949	777
Selling, general, and administrative expense	6,808	3,194	19,580	19,575
Litigation settlement			(10,500)
Insurance gain		0		0
Operating income	$ (7,192)	$ (3,618)	$ (10,338)	$ (20,850)