Note 5 - Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Finite-lived, Gross Carrying Amount	$ 12,580	$ 12,580
Finite-lived, Accumulated Amortization	4,062	3,276
Net Carrying Amount	8,518	9,304
Intangible Assets, Gross Carrying Amount	19,290	19,290
Net Carrying Amount	15,228	16,014
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	2,447	1,828
Net Carrying Amount	8,033	8,652
Patented Technology [Member]
Finite-lived, Gross Carrying Amount	600	600
Finite-lived, Accumulated Amortization	213	95
Net Carrying Amount	387	505
Patents [Member]
Finite-lived, Gross Carrying Amount	590	590
Finite-lived, Accumulated Amortization	492	463
Net Carrying Amount	98	127
Computer Software, Intangible Asset [Member]
Finite-lived, Gross Carrying Amount	270	270
Finite-lived, Accumulated Amortization	270	250
Net Carrying Amount		20
Trade Names [Member]
Finite-lived, Gross Carrying Amount	140	140
Finite-lived, Accumulated Amortization	140	140
Net Carrying Amount
Order or Production Backlog [Member]
Finite-lived, Gross Carrying Amount	500	500
Finite-lived, Accumulated Amortization	500	500
Net Carrying Amount

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

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Amount before 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 928
-SubTopic 340
-Section 50
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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.

+ References

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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-Publisher FASB
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-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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