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Interest Expense (Tables) | 12 Months Ended
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Dec. 31, 2018
Interest and Debt Expense [Abstract] |
Schedule Of Interest Expense | The following table presents an analysis of interest expense:
| For the Year Ended December 31
| 2018 |  | 2017 |  | 2016
| (Dollars in thousands)
Interest incurred on debt | $ | 100,844 |  |  | $ | 24,060 |  |  | $ | 20,408 |
Related Party Promissory Note interest expense | 5,090 |  |  | — |  |  | — |
Senior Note redemption premium | 4,782 |  |  | — |  |  | — |
Accretion of fair value adjustment on Senior Notes | 19,414 |  |  | 6,454 |  |  | 6,305 |
Accretion of original issue discount on 2018 Term Loans | 1,455 |  |  | — |  |  | — |
Amortization of debt issuance costs | 3,476 |  |  | 309 |  |  | 201 |
Total interest expense | $ | 135,061 |  |  | $ | 30,823 |  |  | $ | 26,914 |

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