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Business Segment Information - Analysis of Property, Plant and Equipment of Reporting Segments by Geographic Area (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property plant and equipment net $ 54,606 $ 53,835
U.S. [Member]
    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property plant and equipment net 39,858 39,554
Italy [Member]
    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property plant and equipment net 7,813 7,617
U.K. [Member]
    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property plant and equipment net 1,871 1,402
Brazil [Member]
    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property plant and equipment net 3,210 3,421
Others [Member]
    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property plant and equipment net $ 1,854 $ 1,841