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Senior Notes and Other Long-Term Debt (Tables) | 9 Months Ended
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Dec. 31, 2018
Debt Disclosure [Abstract] |
Components of Long-Term Debt | Total long-term debt consisted of the following as of December 31, 2018 and March 31, 2018:
|  | As of December 31, 2018 |  |  | As of March 31, 2018 |
|  | (In thousands) |
2025 Notes |  | $ | 700,000 |  |  | $ | 700,000 |
Revolving Credit Facility |  |  | 325,000 |  |  |  | — |
Ex-Im Credit Facility |  |  | 152,286 |  |  |  | 362,401 |
Total debt |  |  | 1,177,286 |  |  |  | 1,062,401 |
Unamortized discount and debt issuance costs |  |  | (18,696 | ) |  |  | (38,696 | )
Less: current portion of long-term debt |  |  | 21,755 |  |  |  | 45,300 |
Total long-term debt |  | $ | 1,136,835 |  |  | $ | 978,405 |

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