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Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Oct. 31, 2013
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Total debt | $ 488,024 | $ 518,711 |
Unamortized debt premium | 1,075 | 1,176 |
Debt issuance cost | (2,845) | (3,121) |
Less: current maturities | (108) | (1,167) |
Long-term debt | 487,916 | 517,544 |
6.25% Senior Notes due October 2021 |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | $ 400,000 | 400,000 |
Debt stated interest rate | 6.25% |  | 6.25%
Other debt |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | $ 794 | 1,656 |
2017 Credit Facility | Senior secured revolving credit facility |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | $ 89,000 | $ 119,000 |

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- Definition Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13,16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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