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Financial Instruments - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2013
Dec. 31, 2013
Standby Letters of Credit
Dec. 31, 2012
Standby Letters of Credit
Dec. 31, 2013
Performance Bonds
Dec. 31, 2012
Performance Bonds
Dec. 31, 2013
Foreign Exchange Forward
Not Designated as Hedging Instrument
Dec. 31, 2012
Foreign Exchange Forward
Not Designated as Hedging Instrument
Dec. 31, 2011
Interest Rate Swap
Dec. 31, 2013
Interest Rate Swap
Oct. 31, 2011
Interest Rate Swap
Financial Instrument [Line Items]                      
Changes in fair value foreign currency forward contracts             $ 315 $ (197)      
Interest rate swap agreement with notional amount             26,000       10,000
Contract expiring terms             2014-03        
Interest rate swap agreement maturity period                 2011-10    
Fixed interest rate                   5.07%  
Reclassification reflected from net change in other comprehensive loss 244                    
Derivative financial instruments income tax benefit 155                    
Fair value of contingent liability     2,681 3,098 800 300          
Estimated fair value of contingent liability   $ 0