Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	9 Months Ended
Sep. 30, 2020 USD ($)
Goodwill
Goodwill, beginning balance	$ 19,565
Acquisition	466
Foreign currency translation impact	(208)
Goodwill, ending balance	19,823
Rail Products and Services
Goodwill
Goodwill, beginning balance	14,418
Acquisition	0
Foreign currency translation impact	(208)
Goodwill, ending balance	14,210
Construction Products
Goodwill
Goodwill, beginning balance	5,147
Acquisition	466
Foreign currency translation impact	0
Goodwill, ending balance	5,613
Tubular and Energy Services \| Operating Segments
Goodwill
Goodwill, beginning balance	0
Acquisition	0
Foreign currency translation impact	0
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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975

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-Section 45
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