Annual report pursuant to Section 13 and 15(d)

Acquisitions - Amounts Allocated to Purchased Intangible Assets (Detail)

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Acquisitions - Amounts Allocated to Purchased Intangible Assets (Detail) (Peco, Inc [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]  
Acquisition Fair Value $ 69,000
Trademark [Member]
 
Acquired Finite-Lived Intangible Assets [Line Items]  
Weighted Average Life 10 years
Acquisition Fair Value 4,200
Technology [Member]
 
Acquired Finite-Lived Intangible Assets [Line Items]  
Weighted Average Life 10 years
Acquisition Fair Value 3,300
Backlog and Customer Relationships [Member]
 
Acquired Finite-Lived Intangible Assets [Line Items]  
Acquisition Fair Value $ 61,500
Backlog and Customer Relationships [Member] | Minimum [Member]
 
Acquired Finite-Lived Intangible Assets [Line Items]  
Weighted Average Life 1 year 6 months
Backlog and Customer Relationships [Member] | Maximum [Member]
 
Acquired Finite-Lived Intangible Assets [Line Items]  
Weighted Average Life 16 years