Note 4 - Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Finite-lived, Gross Carrying Amount	$ 12,080	$ 12,080
Finite-lived, Accumulated Amortization	7,287	6,369
Net Carrying Amount, finite-lived	4,793	5,711
Intangible Assets, Gross Carrying Amount	18,790	18,790
Net Carrying Amount	11,503	12,421
Trademarks [Member]
Indefinite-lived, Gross Carrying Amount	6,710	6,710
Net Carrying Amount, indefinite-lived	6,710	6,710
Customer Relationships [Member]
Finite-lived, Gross Carrying Amount	10,480	10,480
Finite-lived, Accumulated Amortization	5,767	4,912
Net Carrying Amount, finite-lived	4,713	5,568
Patented Technology [Member]
Finite-lived, Gross Carrying Amount	600	600
Finite-lived, Accumulated Amortization	528	477
Net Carrying Amount, finite-lived	72	123
Patents [Member]
Finite-lived, Gross Carrying Amount	590	590
Finite-lived, Accumulated Amortization	582	570
Net Carrying Amount, finite-lived	8	20
Computer Software, Intangible Asset [Member]
Finite-lived, Gross Carrying Amount	270	270
Finite-lived, Accumulated Amortization	270	270
Net Carrying Amount, finite-lived	0	0
Trade Names [Member]
Finite-lived, Gross Carrying Amount	140	140
Finite-lived, Accumulated Amortization	140	140
Net Carrying Amount, finite-lived	$ 0	$ 0

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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