Goodwill and Definite-Lived Intangible Assets (Schedule of Goodwill) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 81,752
Foreign currency translation impact	(1,069)
Disposition	(154)
Impairment charges	(61,142)
Goodwill, Ending Balance	19,387
Rail Products and Services [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	48,188
Foreign currency translation impact	(1,069)
Disposition	(154)
Impairment charges	(32,725)
Goodwill, Ending Balance	14,240
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