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Derivative Instruments and Hedging Activities (Tables)
 3 Months Ended
Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
(Loss) gain recognized on non-designated derivative instruments
The following table summarizes the (loss) gain recognized on non-designated foreign-exchange derivative instruments for the three months ended March 31:

 
2014
 
2013
Interest expense
 
$
(1,430
)
 
$
(815
)
Foreign exchange loss, net
 
1,231

 
1,402

 
 
$
(199
)
 
$
587