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Summary of Significant Accounting Policies - Schedule of Components of Changes in Accumulated Other Comprehensive Income (Parenthetical) (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Unrealized loss on cross-currency swaps, taxes (benefit) $ (164,000) $ 153,000 $ (256,000)
Deferred taxes recognized on related foreign currency translation adjustment (869,000) 844,000 (1,061,000)
Foreign Currency Translation Adjustments [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Deferred taxes recognized on related foreign currency translation adjustment 0    
Fair Value of Cross- Currency Swaps [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Unrealized loss on cross-currency swaps, taxes (benefit) (164,000) 153,000  
Accumulated Other Comprehensive Income [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Unrealized loss on cross-currency swaps, taxes (benefit) $ (164,000) $ 153,000