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Debt (Tables)
3 Months Ended
Jun. 30, 2018
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
ebt as of June 30, 2018 and March 31, 2018 is as follows (in thousands):
 
June 30, 2018
 
March 31, 2018
6.75% Senior Notes due 2023
$
15,263

 
$
444,464

7.00% Senior Notes due 2025
548,500

 
548,500

Less unamortized issuance costs
(5,483
)
 
(9,674
)
Total long-term debt
$
558,280

 
$
983,290