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Note 7 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Gross Carrying Amount |  | $ 3,848 | $ 3,967
Accumulated Amortization |  | (1,945) | (1,569)
Intangible Assets, Net |  | 1,903 | 2,398
Customer Relationships [Member] |  |  |
Gross Carrying Amount |  | 1,378 | 1,378
Accumulated Amortization |  | (551) | (413)
Intangible Assets, Net |  | 827 | 965
Patents [Member] |  |  |
Gross Carrying Amount |  | 1,162 | 1,162
Accumulated Amortization |  | (929) | (697)
Intangible Assets, Net |  | 233 | 465
Trademarks and Trade Names [Member] |  |  |
Gross Carrying Amount |  | 1,132 | 1,132
Accumulated Amortization |  | (302) | (226)
Intangible Assets, Net |  | 830 | 906
Other Intangible Assets [Member] |  |  |
Gross Carrying Amount | [1] | 176 | 295
Accumulated Amortization | [1] | (163) | (233)
Intangible Assets, Net | [1] | $ 13 | $ 62
[1] | Other intangibles consist of favorable lease contracts and non-compete agreements.

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- Definition 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/presentationRef -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 + Details
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