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Asset Acquisition - Schedule of Assets Acquired And Liabilities Assumed (Details) - Van Hook Crude LLC $ in Thousands	Mar. 31, 2018 USD ($)
Business Acquisition [Line Items]
Total assets acquired	$ 15,549
Machinery, equipment and tooling
Business Acquisition [Line Items]
Total assets acquired	1,478
Plant and buildings
Business Acquisition [Line Items]
Total assets acquired	1,407
Railroad and sidings
Business Acquisition [Line Items]
Total assets acquired	9,926
Land improvements
Business Acquisition [Line Items]
Total assets acquired	$ 2,738

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+ References

No definition available.

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464

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