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Long Lived Assets by Location (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Long-Lived Assets by Geographical Areas [Line Items]    
Net property, plant and equipment $ 32,490 $ 32,338
UNITED STATES
    
Long-Lived Assets by Geographical Areas [Line Items]    
Net property, plant and equipment 23,691 22,679
Europe
    
Long-Lived Assets by Geographical Areas [Line Items]    
Net property, plant and equipment 5,626 5,963
JAPAN
    
Long-Lived Assets by Geographical Areas [Line Items]    
Net property, plant and equipment 159 208
Asia Pacific And Other Non Us Countries
    
Long-Lived Assets by Geographical Areas [Line Items]    
Net property, plant and equipment $ 3,014 $ 3,488