Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012	Dec. 31, 2012
Goodwill And Other Intangible Assets Textual [Abstract]
Intangible assets, other than goodwill and in-process research and development	$ 43,179,000		$ 43,179,000		$ 47,538,000
Goodwill	35,156,000		35,156,000		35,156,000
Recorded Amortization Expense	1,300,000	900,000	4,300,000	2,200,000
The weighted average remaining amortization period for the amortizable intangible assets			11 years 3 months 18 days
Estimates remaining amortization expense in 2013	1,300,000		1,300,000
Estimates remaining amortization expense in 2014	4,800,000		4,800,000
Estimates remaining amortization expense in 2015	4,600,000		4,600,000
Estimates remaining amortization expense in 2016	4,300,000		4,300,000
Estimates remaining amortization expense in 2017	4,200,000		4,200,000
Estimates remaining amortization expense, thereafter	24,000,000		24,000,000
Components and Sensors segment [Member]
Goodwill And Other Intangible Assets Textual [Abstract]
Intangible assets, other than goodwill and in-process research and development	38,900,000		38,900,000
Goodwill	34,700,000		34,700,000		34,700,000
EMS [Member]
Goodwill And Other Intangible Assets Textual [Abstract]
Intangible assets, other than goodwill and in-process research and development	4,300,000		4,300,000
Goodwill	500,000		500,000		500,000
Customer lists/relationships [Member]
Goodwill And Other Intangible Assets Textual [Abstract]
The weighted average remaining amortization period for the amortizable intangible assets			12 years 1 month 6 days
Other intangibles [Member]
Goodwill And Other Intangible Assets Textual [Abstract]
The weighted average remaining amortization period for the amortizable intangible assets			8 years 8 months 12 days
External Valuation Adjustments [Member]
Goodwill And Other Intangible Assets Textual [Abstract]
Reduction in goodwill due to fair value adjustment	1,194,000		1,194,000
External Valuation Adjustments [Member] | Customer lists/relationships [Member]
Goodwill And Other Intangible Assets Textual [Abstract]
Increase (Decrease) in carrying amount subsequent to valuation of customer lists/relationships and other intangible assets			7,988,000
External Valuation Adjustments [Member] | Other intangibles [Member]
Goodwill And Other Intangible Assets Textual [Abstract]
Increase (Decrease) in carrying amount subsequent to valuation of customer lists/relationships and other intangible assets			$ 9,445,000