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Other Income, Net - Components of Other Income (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Other Income And Expenses [Abstract]      
Interest income $ 97 $ 136 $ 259
Foreign currency losses, net (94) (46) (326)
Gain on disposal of equipment 26 33 21
Credit (losses) gains on available for sale securities (78) (9) 302
Other 51 80 90
Total other income, net $ 2 $ 194 $ 346