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Acquisitions (Narrative) (Details) - Houston Interests, LLC [Member] $ in Thousands | Dec. 12, 2016 USD ($)
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Business Acquisition [Line Items] |
Business Acquisition, Effective Date of Acquisition | Dec. 12, 2016
Business Acquisition, Name of Acquired Entity | Houston Interests, LLC
Business Combination, Consideration Transferred | $ 42,506

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