Business Segments (Reconciliation of Significant Reconciling Items) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Net sales	$ 135,994	$ 171,419	$ 262,304	$ 309,326
Segment Profit (Loss)	(124,207)	11,929	(124,945)	21,187
Rail Products and Services [Member]
Segment Reporting Information [Line Items]
Net sales	67,503	86,882	131,795	164,558
Segment Profit (Loss)	(25,168)	6,413	(24,427)	12,485
Construction Products [Member]
Segment Reporting Information [Line Items]
Net sales	40,348	49,516	72,228	83,806
Segment Profit (Loss)	3,944	5,158	4,392	6,386
Tubular and Energy Services [Member]
Segment Reporting Information [Line Items]
Net sales	28,143	35,021	58,281	60,962
Segment Profit (Loss)	$ (102,983)	$ 358	$ (104,910)	$ 2,316