Goodwill and Definite-Lived Intangible Assets (Schedule of Goodwill) (Details) $ in Thousands	6 Months Ended
Jun. 30, 2016 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 81,752
Foreign currency translation impact	(867)
Disposition	(154)
Impairment charges	(56,759)
Goodwill, Ending Balance	23,972
Rail Products and Services [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	48,188
Foreign currency translation impact	(867)
Disposition	(154)
Impairment charges	(28,342)
Goodwill, Ending Balance	18,825
Construction Products [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	5,147
Foreign currency translation impact	0
Disposition	0
Impairment charges	0
Goodwill, Ending Balance	5,147
Tubular and Energy Services [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	28,417
Foreign currency translation impact	0
Disposition	0
Impairment charges	(28,417)
Goodwill, Ending Balance	$ 0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 45
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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