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Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2014
Investments, All Other Investments [Abstract]  
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]
The following table sets forth the assets and liabilities as of March 31, 2014 and December 31, 2013 that the Company measured at fair value, on a recurring basis by level, within the fair value hierarchy (in thousands). As required by the standard, assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to their fair value measurement.
  
March 31, 2014
 
Level 1
 
Level 2
 
Level 3
 
 
 
 
 
 
 
 
 
 
 
 
Assets
 
 
 
 
 
 
 
 
 
 
Derivatives
 
$
 
$
78
 
$
 
 
December 31, 2013
 
Level 1
 
Level 2
 
Level 3
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities
 
 
 
 
 
 
 
 
 
 
Derivatives
 
$
 
$
577
 
$