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Note 5 - Schedule of Goodwill (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Water Transmission Group [Member] | Operating Segments [Member]
Goodwill balance	$ 5,282,000	$ 5,282,000
Additions			$ 5,282,000
Goodwill balance		$ 5,282,000	5,282,000
Adjustment for the sale of OCTG business
Impairment adjustment	$ (5,282,000)
Water Transmission Group [Member]
Impairment adjustment	$ (5,300,000)
Tubular Products [Member] | Operating Segments [Member]
Goodwill balance		$ 20,478,000	$ 20,478,000
Additions
Goodwill balance			$ 20,478,000
Adjustment for the sale of OCTG business		$ (4,412,000)
Impairment adjustment		(16,066,000)
Tubular Products [Member]
Goodwill balance	$ 0
Goodwill balance		0
Impairment adjustment		(16,100,000)	0
Goodwill balance	5,282,000	25,760,000	20,478,000
Additions			5,282,000
Goodwill balance	0	5,282,000	$ 25,760,000
Adjustment for the sale of OCTG business		(4,412,000)
Impairment adjustment	$ (5,282,000)	$ (16,066,000)

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
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X

- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267

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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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X

- Definition

Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
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-Paragraph 1
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