Business Segments (Tables)

3 Months Ended

Mar. 31, 2013

Business Segments [Abstract]

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

		Three Months Ended
		March 31, 2013				March 31, 2012
		Net		Segment		Net		Segment
		Sales		Profit		Sales		Profit
Rail products	$	81,399	$	6,201	$	66,631	$	3,449
Construction products		36,811		462		38,363		475
Tubular products		11,111		2,607		9,297		2,312
Total	$	129,321	$	9,270	$	114,291	$	6,236

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

		Three Months Ended
		March 31,
		2013		2012
Income for reportable segments	$	9,270	$	6,236
Interest expense		(133)		(139)
Interest income		206		100
Other income		178		486
LIFO expense		(240)		(45)
Equity in income of nonconsolidated investment		176		23
Corporate expense, cost of capital elimination and other unallocated charges		(2,013)		(2,168)
Income from continuing operations before income taxes	$	7,444	$	4,493