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Financial Risk Management and Derivatives (Tables)
12 Months Ended
Mar. 31, 2013
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
 
Derivatives Not Designated as
 
Years Ended March 31,
 
Hedging Instruments
 
2013
  
2012
  
2011
 
           
Forward foreign currency exchange contracts
 $804,000  $(476,000) $(162,000)