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Summary of Property, Plant and Equipment Attributed to Significant Countries (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Segment Reporting Information [Line Items]      
Property, plant and equipment $ 157,021 $ 130,554 $ 126,725
UNITED STATES
     
Segment Reporting Information [Line Items]      
Property, plant and equipment 86,476 59,444 60,337
JAPAN
     
Segment Reporting Information [Line Items]      
Property, plant and equipment 27,024 29,295 28,986
Malaysia
     
Segment Reporting Information [Line Items]      
Property, plant and equipment 28,398 30,328 26,349
All Other Segments
     
Segment Reporting Information [Line Items]      
Property, plant and equipment $ 15,123 $ 11,487 $ 11,053