Note 3 - Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Finite-lived, Gross Carrying Amount	$ 12,080	$ 12,080
Finite-lived, Accumulated Amortization	5,756	5,136
Net Carrying Amount	6,324	6,944
Intangible Assets, Gross Carrying Amount	18,790	18,790
Net Carrying Amount	13,034	13,654
Trademarks [Member]
Indefinite-lived, Gross Carrying Amount	6,710	6,710
Net Carrying Amount	6,710	6,710
Customer Relationships [Member]
Finite-lived, Gross Carrying Amount	10,480	10,480
Finite-lived, Accumulated Amortization	4,354	3,805
Net Carrying Amount	6,126	6,675
Patented Technology [Member]
Finite-lived, Gross Carrying Amount	600	600
Finite-lived, Accumulated Amortization	436	380
Net Carrying Amount	164	220
Patents [Member]
Finite-lived, Gross Carrying Amount	590	590
Finite-lived, Accumulated Amortization	556	541
Net Carrying Amount	34	49
Computer Software, Intangible Asset [Member]
Finite-lived, Gross Carrying Amount	270	270
Finite-lived, Accumulated Amortization	270	270
Net Carrying Amount
Trade Names [Member]
Finite-lived, Gross Carrying Amount	140	140
Finite-lived, Accumulated Amortization	140	140
Net Carrying Amount

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
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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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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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