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Long-Term Debt | 6 Months Ended
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Jun. 30, 2017
Debt Disclosure [Abstract] |
Long-Term Debt | 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. Senior Unsecured Notes On April 28, 2017, we issued $400 million of senior unsecured notes ("the Senior Notes"), which bear interest at a rate of 5.125% per annum and mature on May 15, 2025. The proceeds of the Senior Notes were used to repay our term loan B, for the payment of the related issuance costs and for general corporate purposes. The Senior Notes were priced at 100% of par value and interest is payable semi-annually on May 15 and November 15. Prior to May 15, 2020, we may redeem the Senior Notes, in whole or in part, at any time, or from time to time, at a price equal to 100% of the principal amount of the Senior Notes, plus accrued and unpaid interest, if any, to the date of redemption, plus a “make-whole” premium, as set forth in the Senior Notes indenture. In addition, on or prior to May 15, 2020, we may redeem up to 40% of the Senior Notes, using proceeds of equity offerings. If we sell certain of our assets or have a change of control, the holders of the Senior Notes may require us to repurchase some or all of the notes. The Senior Notes are also guaranteed by us and the majority our subsidiaries. The Senior Notes contain covenants with which we must comply that are typical for borrowing transactions of this nature. We incurred approximately $7.0 million of deferred financing costs in connection with the issuance of the Senior Notes, which will be amortized over the life of the Senior Notes. In connection with the new financing we wrote off to interest expense $2.4 million of deferred financing cost associated with the term loan B. Revolving Credit Facility On April 28, 2017, we amended and restated our $100 million revolving credit facility ("Revolving Credit Facility"), increasing its capacity to $125 million and extending the maturity to April 2022. Interest is payable on the Revolving Credit Facility at rates based on LIBOR, plus a margin based on our leverage ratio, ranging from 1.75% to 2.50%. The Revolving Credit Facility includes maintaining of a net leverage ratio when we have outstanding borrowings on the facility, as well as other restrictions on payments (dividends and share repurchases). Additionally, we can make acquisitions as long as the pro forma net leverage ratio is less than 5.5 to 1.0. We granted the lenders mortgages on certain of our real property, pledges of our equity interests in our subsidiaries and security interests in substantially all other personal property including cash, accounts receivables, and equipment. Commitment fees of 0.30% to 0.50% per annum, based on our leverage ratio, of the total unused commitment are payable under the Revolving Credit Facility. As of June 30, 2017 and December 31, 2016, we had $0.8 million of outstanding letters of credit. Financing Agreement Until April 28, 2017, we had a $500 million revolving credit and term loan agreement ("Financing Agreement"). Under the Financing Agreement, we had a $400 million term loan B that matured in November 2020 and a $100 million revolving credit facility that matured in November 2018. We repaid the term loan B with the proceeds of our Senior Notes. The Revolving Credit Facility was amended as described above. Interest was payable on the term loan B at rates based on LIBOR, plus a fixed margin of 2.5%. Prior to December 2016, interest was payable at rates based on LIBOR, with a 0.75% floor, plus a fixed margin of 2.75%. As of December 31, 2016, the interest rate was 3.27% on the term loan B. The weighted-average interest rate on the term loan B was 4.93% for the six months ended June 30, 2016. Unsecured Subordinated Notes The unsecured subordinated promissory notes bear interest at a rate of 7.25% per annum payable quarterly. The notes are payable in annual installments of $2.7 million through 2018, with no prepayment right.

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- Definition The entire disclosure for long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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