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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
 6 Months Ended
Sep. 30, 2013
Fair Value Disclosures [Abstract]  
Fair Value of Senior Notes

The fair value of our long-term debt has been estimated based upon our current incremental borrowing rates for similar types of borrowing arrangements. The fair value of our Senior Notes at September 30, 2013 is as follows:

 

     Fair Value  
     (dollars in thousands)  

Series 2005A Tranche B

    $ 59,897   

Series 2005A Tranche C

      61,047   

Series 2007A Tranche A

      9,814   

Series 2007A Tranche B

      8,684   

Series 2007A Tranche C

      26,340   

Series 2007A Tranche D

      40,369