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Financial Risk Management and Derivatives (Tables)
9 Months Ended
Dec. 31, 2012
Financial Risk Management and Derivatives [Abstract]  
Schedule of derivative instruments on consolidated statements of operations
The following table shows the effect of the Company's derivative instruments on its consolidated statements of operations:
 
   Gain (Loss) Recognized within General and Administrative Expenses 
   Three Months Ended Nine Months Ended 
Derivatives Not Designated as
 December 31, December 31, 
Hedging Instruments
 2012 2011 2012 2011 
                   
Forward foreign currency exchange contracts
 $
  20,000
 $
488,000
 $
 360,000
 $
(1,399,000)