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Debt (Tables) | 3 Months Ended
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Mar. 31, 2018
Debt Disclosure [Abstract] |
Summary of Outstanding Debt | Debt outstanding at March 31 consisted of the following:
| March 31, 2018 |  | December 31, 2017
Long-Term Debt: |  |  |
Senior unsecured notes | $ | 300,000 |  |  | $ | 300,000 |
Credit facility borrowings | 76,000 |  |  | 80,000 |
Capital lease obligations | 3,416 |  |  | 3,279 |
Total Long-Term Debt | 379,416 |  |  | 383,279 |
Less: unamortized debt issuance costs | (6,094 | ) |  | (6,440 | )
Less: current maturities of credit facility borrowings, net of debt issuance costs(1) | (29,460 | ) |  | (29,413 | )
Less: current maturities of capital lease obligations(1) | (1,442 | ) |  | (1,470 | )
Long-term portion | $ | 342,420 |  |  | $ | 345,956 |
(1) | Current maturities of long-term debt include $30,000 of current maturities, less $540 of unamortized debt issuance costs, under our 2017 Credit Agreement and $1,442 of current maturities of capital lease obligations.

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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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