Summary Of Financial Information For Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Segment Reporting Information [Line Items]
Total net sales	$ 184,449	$ 173,014	$ 548,085	$ 585,337
Total segment profit	46,049	40,987	135,924	151,903
CCS
Segment Reporting Information [Line Items]
Total net sales	112,876	110,015	351,572	378,896
Total segment profit	27,166	29,522	93,917	114,230
ME
Segment Reporting Information [Line Items]
Total net sales	54,421	42,738	139,691	142,034
Total segment profit	16,771	6,790	30,823	23,758
SMD
Segment Reporting Information [Line Items]
Total net sales	17,152	20,261	56,822	64,407
Total segment profit	$ 2,112	$ 4,675	$ 11,184	$ 13,915