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Information by Geographic Area (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]          
Long-lived Assets $ 14,956   $ 14,956   $ 15,826 [1]
Net sales 106,232 145,359 184,301 218,764  
China
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Long-lived Assets 10,740   10,740   10,793
United States
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Long-lived Assets 3,148   3,148   3,762
Net sales 86,317 115,841 147,700 179,712  
Hong Kong
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Long-lived Assets 1,068   1,068   1,271
Net sales 1,447 876 2,657 1,105  
Europe
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net sales 8,458 12,229 17,526 15,438  
Canada
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net sales 2,894 5,613 4,984 8,392  
Other
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net sales $ 7,116 $ 10,800 $ 11,434 $ 14,117  
[1] Derived from audited financial statements