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Summary of Net Income (Loss) by Geographical Areas (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Segment Reporting, Revenue Reconciling Item [Line Items]      
Total net income attributable to Nam Tai shareholders $ 41,216 $ 37,433 $ 13,608
PRC (excluding Hong Kong)
     
Segment Reporting, Revenue Reconciling Item [Line Items]      
Sales 855,847 678,113 509,124
Total net income attributable to Nam Tai shareholders 43,602 40,023 19,973
Hong Kong
     
Segment Reporting, Revenue Reconciling Item [Line Items]      
Total net income attributable to Nam Tai shareholders $ (2,386) $ (2,590) $ (6,365)