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Note 5 - Supplemental Balance Sheet Information - Composition of Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Cost | $ 12,234 | $ 12,496
Accumulated Amortization | 8,288 | 8,158
Net | 3,946 | 4,338
Trademarks |  |
Cost | 3,411 | 3,567
Accumulated Amortization | 0 | 0
Net | 3,411 | 3,567
Patents and Technology |  |
Cost | 4,482 | 4,509
Accumulated Amortization | 4,217 | 4,114
Net | 265 | 395
Customer Relationships |  |
Cost | 3,971 | 4,029
Accumulated Amortization | 3,716 | 3,679
Net | 255 | 350
Distributor Relationships |  |
Cost | 370 | 391
Accumulated Amortization | 355 | 365
Net | $ 15 | $ 26

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- 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/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=26713463&loc=d3e16323-109275 + Details
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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=26713463&loc=d3e16323-109275 + Details
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