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Long-Term Debt (Tables) | 6 Months Ended
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Jun. 30, 2017
Debt Disclosure [Abstract] |
Components of Long-term debt | Long-term debt consisted of the following:
(in thousands) |  | As of June 30, 2017 |  | As of December 31, 2016
Variable rate credit facility |  | $ | — |  |  | $ | — |
Senior unsecured notes |  | 400,000 |  |  | — |
Term loan B |  | — |  |  | 390,521 |
Unsecured subordinated notes |  | 5,312 |  |  | 5,312 |
Total outstanding principal |  | 405,312 |  |  | 395,833 |
Less: Debt issuance costs |  | (7,057 | ) |  | (2,648 | )
Less: Current portion |  | (2,656 | ) |  | (6,571 | )
Net carrying value of long-term debt |  | $ | 395,599 |  |  | $ | 386,614 |
Fair value of long-term debt * |  | $ | 420,122 |  |  | $ | 395,514 |
* Fair value of the Senior Notes and the term loan B were estimated based on quoted private market transactions and is classified as Level 1 in the fair value hierarchy. The fair value of the unsecured subordinated notes is determined based on a discounted cash flow analysis using current market interest rates of comparable instruments and is classified as Level 2 in the fair value hierarchy.

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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