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Debt (Tables) | 12 Months Ended
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Dec. 31, 2017
Debt Disclosure [Abstract] |
Debt [Table Text Block] | Long-term debt consisted of the following:
|  | December 31, 2017 |  | December 31, 2016
|  | (thousands)
Asset-based revolving credit facility |  | $ | — |  |  | $ | — |
Asset-based credit facility term loan due 2022 |  | 50,000 |  |  | 50,000 |
Term loan due 2026 |  | 45,000 |  |  | 45,000 |
5.625% senior notes due 2024 |  | 350,000 |  |  | 350,000 |
Deferred financing costs |  | (6,688 | ) |  | (7,371 | )
Long-term debt |  | $ | 438,312 |  |  | $ | 437,629 |
Schedule of Maturities of Long-term Debt [Table Text Block] | At December 31, 2017, the maturities for the aggregate amount of long-term debt outstanding were as follows (in thousands):
2018 |  | $ | — |
2019 |  | — |
2020 |  | — |
2021 |  | — |
2022 |  | 50,000 |
Thereafter |  | 395,000 |

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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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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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