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Accumulated Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning Balance     $ (150)  
Other comprehensive income (loss) before reclassifications, net of tax (95) (48) 90 91
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax (93) 37 (80) 19
Other comprehensive (loss) income (188) (11) 10 110
Ending Balance (140)   (140)  
Unrealized Gains and (Losses) on Securities Available-for-Sale [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning Balance     (231) (287)
Other comprehensive income (loss) before reclassifications, net of tax     90 91
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax     0  
Amounts reclassified from accumulated other comprehensive income     0  
Other comprehensive (loss) income     90 91
Ending Balance (141) (196) (141) (196)
Foreign Currency Translation Adjustments [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning Balance     81  
Other comprehensive income (loss) before reclassifications, net of tax     0  
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax     (80) 19
Amounts reclassified from accumulated other comprehensive income     0  
Other comprehensive (loss) income     (80) 19
Ending Balance $ 1 $ 19 $ 1 $ 19