Discontinued Operations (Details) - Discontinued Operations, Liquidated - Bayou Welding Works - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2014	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
General and administrative expense	$ 1,400
Operating loss		$ (6,008)

Amount of general and administrative expense attributable to disposal group, including, but not limited to, discontinued operation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760

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- Definition

Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation.

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- Definition

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+ References

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