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Note 7 - Segment Information Report of Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014
Water Transmission Group [Member]
Net sales:
Net Sales	$ 39,792	$ 76,857	$ 134,479		$ 182,061
Gross profit (loss):
Gross profit (loss)	(725)	16,559	8,049		29,718
Operating income (loss):
Operating Income (loss)	(2,384)	14,429	(2,566)	[1]	23,673
Tubular Products [Member]
Net sales:
Net Sales	12,543	39,648	56,567		119,079
Gross profit (loss):
Gross profit (loss)	(1,786)	(739)	(9,262)		1,733
Operating income (loss):
Operating Income (loss)	(2,298)	(1,155)	(11,169)		550
Corporate Segment [Member]
Operating income (loss):
Operating Income (loss)	(2,602)	(3,943)	(9,959)		(10,619)
Net Sales	52,335	116,505	191,046		301,140
Gross profit (loss)	(2,511)	15,820	(1,213)		31,451
Operating Income (loss)	$ (7,284)	$ 9,331	$ (23,694)		$ 13,604
[1] Operating loss for the Water Transmission Group for the nine months ended September 30, 2015 includes the write-off of Water Transmission goodwill of $5.3 million in the second quarter of 2015.

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- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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