Business Segments (Reconciliation of Significant Reconciling Items) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Net sales	$ 114,644	$ 176,059	$ 376,948	$ 485,385
Segment Profit (Loss)	(7,657)	(68,433)	(132,602)	(47,246)
Rail Products and Services [Member]
Segment Reporting Information [Line Items]
Net sales	56,891	87,972	188,686	252,530
Segment Profit (Loss)	(2,047)	6,984	(26,474)	19,469
Construction Products [Member]
Segment Reporting Information [Line Items]
Net sales	34,870	54,093	107,098	137,899
Segment Profit (Loss)	1,356	4,456	5,748	10,842
Tubular and Energy Services [Member]
Segment Reporting Information [Line Items]
Net sales	22,883	33,994	81,164	94,956
Segment Profit (Loss)	$ (6,966)	$ (79,873)	$ (111,876)	$ (77,557)