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Note 7 - Goodwill and Intangible Assets - Goodwill, by Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Balance	$ 3,423	$ 3,423
Acquisitions	1,700	3,423
Impairments	0	3,423
Balance	5,123	3,423
Carbon Flat Products [Member]
Balance	1,065	1,065
Acquisitions	0	0
Impairments	0	0
Balance	1,065	1,065
Specialty Metals Flat Products [Member]
Balance	2,358	2,358
Acquisitions	1,700	0
Impairments	0	0
Balance	4,058	2,358
Tubular and Pipe Products [Member]
Balance	0	0
Acquisitions	0	0
Impairments	0	0
Balance	$ 0	$ 0

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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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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

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X

- Definition

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

+ References

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