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Long-Term Debt (Tables) | 9 Months Ended
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Sep. 30, 2018
Debt Disclosure [Abstract] |
Summary Long-term debt | Our long-term debt is summarized below (in thousands):
| Sept. 30, 2018 |  | Dec. 31, 2017
Unsecured floating rate term loan due quarterly through August 2018 | $ | — |  |  | $ | 20,500 |
VIE unsecured floating rate term loans due quarterly through December 2018 | 162 |  |  | 646 |
Unsecured floating rate term loan due quarterly through June 2020 | 70,000 |  |  | 100,000 |
Unsecured floating rate term loan due quarterly through September 2020 | 180,000 |  |  | 225,000 |
Borrowings under revolving credit agreement expiring June 2023 | 72,000 |  |  | — |
Unsecured notes bearing fixed rate interest at 5.125% due October 2019 | 320,000 |  |  | 320,000 |
Unsecured notes bearing fixed rate interest at 5.125% due July 2020 | 600,000 |  |  | 600,000 |
Unsecured notes bearing fixed rate interest at 4.875% due September 2021 | 350,000 |  |  | 350,000 |
Unsecured notes bearing fixed rate interest at 6.375% due October 2023 | 650,000 |  |  | 650,000 |
Unsecured notes bearing fixed rate interest at 5.50% due September 2024 | 325,000 |  |  | 325,000 |
Unsecured notes bearing fixed rate interest at 7.75% due June 2027 | 200,000 |  |  | 200,000 |
Unsecured notes bearing fixed rate interest at 7.25% due September 2027 | 240,000 |  |  | 240,000 |
Total principal long-term debt | 3,007,162 |  |  | 3,031,146 |
Debt issuance costs | (16,766 | ) |  | (20,551 | )
Other (fair market value adjustments and discounts) | (799 | ) |  | (2,902 | )
Total long-term debt | 2,989,597 |  |  | 3,007,693 |
Less current portion of long-term debt maturities | 162 |  |  | 646 |
Long-term debt, net of current portion | $ | 2,989,435 |  |  | $ | 3,007,047 |

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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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