Business Segments (Schedule Of Profit Loss By Reporting Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Segment Reporting Information [Line Items]
Net Sales	$ 164,942	$ 171,511	$ 280,905	$ 286,857
Segment (Loss)/Profit	(4,001)	11,035	2,667	14,049
Rail Products Segment [Member]
Segment Reporting Information [Line Items]
Net Sales	101,369	88,824	168,000	151,639
Segment (Loss)/Profit	(10,023)	3,273	(6,353)	3,849
Construction Products Segment [Member]
Segment Reporting Information [Line Items]
Net Sales	49,624	73,026	89,659	119,806
Segment (Loss)/Profit	2,616	5,784	3,302	7,478
Tubular Products Segments [Member]
Segment Reporting Information [Line Items]
Net Sales	13,949	9,661	23,246	15,412
Segment (Loss)/Profit	$ 3,406	$ 1,978	$ 5,718	$ 2,722