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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]      
Goodwill $ 26,777   $ 26,500
Decrease in goodwill offset amount due to foreign currency fluctuations 277    
Aggregate amortization expense on intangible assets $ 13 $ 13