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Related Parties (Tables) | 12 Months Ended
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Dec. 31, 2018
Related Party Transactions [Abstract] |
Schedule of Related Party Transactions | Following is a summary of transactions and balances with affiliates:
|  | Years Ending December 31,
|  | 2018 | 2017 | 2016
|  | (in thousands)
Sales to affiliates |  | $ | 1,442 |  | $ | 1,579 |  | $ | 1,671 |
Payments to affiliates |  | 342 |  | 432 |  | 697 |
|  |  | December 31,
|  |  | 2018 | 2017
|  |  | (in thousands)
Due from affiliates |  |  | $ | 79 |  | $ | 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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