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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) | 6 Months Ended
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Sep. 30, 2015
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, 2015 is as follows:
|  | Fair Value
|  | (dollars in thousands)
Series 2005A Tranche B |  | $ | 57,272
Series 2005A Tranche C |  |  | 59,941
Series 2007A Tranche B |  |  | 8,281
Series 2007A Tranche C |  |  | 25,505
Series 2007A Tranche D |  |  | 40,153

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