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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
6 Months Ended
Sep. 30, 2017
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 Unsecured Notes and Private Placement Senior Unsecured Notes at September 30, 2017 is as follows:

 

 

 

Fair Value

 

 

 

(dollars in thousands)

 

Series 2005A Tranche C

 

$

57,399

 

Series 2007A Tranche C

 

 

24,005

 

Series 2007A Tranche D

 

 

38,609

 

4.5% Senior Unsecured Notes Due 2026

 

 

365,190