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Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities - (Tables)
6 Months Ended
Jun. 30, 2013
Derivative Instruments and Hedging Activities [Abstract]  
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
The dollar equivalent of the U.S. dollar forward contracts and related fair values as of June 30, 2013 and December 31, 2012 were as follows:

June 30, 2013

December 31, 2012
Notional amount
$
450


$
3,457

Fair value of asset
$
13


$
268