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Foreign Currencies - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Schedule of Foreign Currency Balance [Line Items]    
Investment subject to foreign currency fluctuations $ 89,580  
Cumulative foreign currency translation loss, net of deferred income tax benefit 3,261 1,940
Amount reclassified to net income $ 0