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Note 10 - Goodwill and Other Intangible Assets - Major Components of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Intangible assets, cost	$ 16,944	$ 16,873
Intangible assets, accumulated amortization	12,527	11,164
Goodwill, Ending Balance	27,537	27,215	$ 27,234
Intangible assets, including goodwill, cost	46,702	46,160
Trademarks and Trade Names [Member]
Trade names and trademarks	2,221	2,072
Customer Relationships [Member]
Intangible assets, cost	7,876	7,832
Intangible assets, accumulated amortization	6,991	6,301
Technology and Drawings [Member]
Intangible assets, cost	6,761	6,749
Intangible assets, accumulated amortization	4,015	3,712
Other Intangible Assets [Member]
Intangible assets, cost	2,307	2,292
Intangible assets, accumulated amortization	$ 1,521	$ 1,151

X

- Definition

The gross amount of intangible assets including goodwill.

+ References

No definition available.

+ Details

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X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- 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
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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-Section 45
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- Definition

Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

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