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Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2015
Related Party Transaction [Line Items] |
Schedule of Related Party Transactions [Table Text Block] | Our consolidated financial statements include sales to and purchases from unconsolidated affiliates in the ordinary course of business as follows (in thousands):
| Year Ended December 31,
| 2015 |  | 2014 |  | 2013
Sales to unconsolidated affiliates | $ | 25,903 |  |  | $ | 45,415 |  |  | $ | 29,420 |
Purchases from unconsolidated affiliates | 115,697 |  |  | 64,631 |  |  | 57,022 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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