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Note 5 - Impact from Derivatives on Consolidated Statements of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest Rate Swap [Member] | Chicago Tube and Iron Company Acquisition [Member]
Derivatives	$ (13)	$ (18)	$ (33)	$ (35)
Interest Rate Swap [Member] | A B L Credit Facility [Member]
Derivatives	(37)	(95)	(98)	(194)
Metals Swap [Member]
Derivatives	138	(270)	62	(1,387)
Embedded Customer Derivatives [Member]
Derivatives	(138)	270	(62)	1,387
Derivatives	$ (50)	$ (113)	$ (131)	$ (229)

X

- Definition

Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

+ Details

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- Details

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