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FINANCING ARRANGEMENTS (Tables)
3 Months Ended
May 31, 2016
FINANCING ARRANGEMENTS AND CONTRACTUAL CASH OBLIGATIONS [Abstract]  
Schedule of Balances Attributable to the Notes
May 31, February 29,
      2016       2016
Principal   $ 172,500   $ 172,500
Less: Unamortized debt discount (27,495 )   (29,002 )
          Unamortized debt issuance costs   (3,506 )   (3,698 )
Net carrying amount of the Notes $        141,499 $        139,800