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Related Parties (Tables) | 9 Months Ended
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Sep. 30, 2018
Related Party Transactions [Abstract] |
Schedule of Related Party Transactions | The following is a summary of transactions and balance with affiliates:
| Three months ended |  | Nine months ended
| September 30, 2018 |  | September 30, 2017 |  | September 30, 2018 |  | September 30, 2017
| (in thousands)
Sales to affiliates | $ | 298 |  |  | $ | 76 |  |  | $ | 890 |  |  | $ | 1,226 |
Payments to affiliates | 48 |  |  | 107 |  |  | 159 |  |  | 415 |
| September 30, 2018 |  | December 31, 2017
| (in thousands)
Due from affiliates | $ | 144 |  |  | $ | 9 |
Due to affiliates | — |  |  | — |

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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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