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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) | 3 Months Ended
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Jun. 30, 2016
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 Private Placement Senior Notes at June 30, 2016 is as follows:
|  | Fair Value
|  | (dollars in thousands)
Series 2005A Tranche C |  | $ | 59,197
Series 2007A Tranche B |  |  | 8,074
Series 2007A Tranche C |  |  | 25,025
Series 2007A Tranche D |  |  | 40,108

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