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Goodwill and Other Intangible Assets (Details Textual) (USD $)
3 Months Ended
Mar. 31, 2013
Apr. 01, 2012
Dec. 31, 2012
Goodwill and Other Intangible Assets (Textual) [Abstract]      
Intangible assets, other than goodwill and in-process research and development $ 45,785,000   $ 47,538,000
Goodwill 35,156,000   35,156,000
The weighted average remaining amortization period for the amortizable intangible assets 11 years 8 months 12 days    
Recorded Amortization Expense 1,800,000 800,000  
Goodwill and Other Intangible Assets (Additional Textual) [Abstract]      
Estimates remaining amortization expense in 2013 3,800,000    
Estimates remaining amortization expense in 2014 4,800,000    
Estimates remaining amortization expense in 2015 4,600,000    
Estimates remaining amortization expense in 2016 4,300,000    
Estimates remaining amortization expense in 2017 4,200,000    
Estimates remaining amortization expense, thereafter 24,100,000    
Components and Sensors segment [Member]
     
Goodwill and Other Intangible Assets (Textual) [Abstract]      
Intangible assets, other than goodwill and in-process research and development 41,100,000    
Goodwill 34,656,000   35,850,000
EMS segment [Member]
     
Goodwill and Other Intangible Assets (Textual) [Abstract]      
Intangible assets, other than goodwill and in-process research and development 4,700,000    
Goodwill 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 4 months 24 days    
(Decrease) in carrying amount subsequent to valuation of customer lists/relationships 62,014,000   62,014,000
Other intangibles [Member]
     
Goodwill and Other Intangible Assets (Textual) [Abstract]      
The weighted average remaining amortization period for the amortizable intangible assets 9 years 2 months 12 days    
Increase in carrying amount of other intangible assets subsequent to external valuation 11,280,000   11,280,000
External Valuation Adjustments [Member]
     
Goodwill and Other Intangible Assets (Textual) [Abstract]      
(Decrease) in carrying amount subsequent to valuation of customer lists/relationships (7,988,000)    
Increase in carrying amount of other intangible assets subsequent to external valuation 9,445,000    
Reduction in goodwill due to fair value adjustment $ 1,194,000