Goodwill and Other Intangible Assets (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012	Dec. 31, 2012
Goodwill and Other Intangible Assets (Textual) [Abstract]
Intangible assets, other than goodwill and in-process research and development	$ 44,457,000		$ 44,457,000		$ 47,538,000
Goodwill	35,156,000		35,156,000		35,156,000
The weighted average remaining amortization period for the amortizable intangible assets			11 years 6 months
Goodwill and Other Intangible Assets (Additional Textual) [Abstract]
Recorded Amortization Expense	1,300,000	700,000	3,000,000	1,500,000
Estimates remaining amortization expense in 2013	2,600,000		2,600,000
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	40,000,000		40,000,000
Goodwill	34,700,000		34,700,000
EMS segment [Member]
Goodwill and Other Intangible Assets (Textual) [Abstract]
Intangible assets, other than goodwill and in-process research and development	4,500,000		4,500,000
Goodwill					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 3 months 18 days
Other intangibles [Member]
Goodwill and Other Intangible Assets (Textual) [Abstract]
The weighted average remaining amortization period for the amortizable intangible assets			8 years 10 months 24 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