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Note 6 - Intangible Assets (Details) - Intangible Assets (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items] |  |
Cost | $ 248,032 | $ 236,906
Accumulated Amortization | 203,916 | 186,702
Carrying Amount | 44,116 | 41,614
Patents and Copyrights [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period | 17 years | 16 years
Cost | 57,818 | 46,692
Accumulated Amortization | 30,369 | 28,405
Carrying Amount | 27,449 | 18,287
Intellectual Property [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period | 15 years | 15 years
Cost | 100,000 | 100,000
Accumulated Amortization | 83,333 | 76,673
Carrying Amount | 16,667 | 23,327
Licensing Agreements [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period | 5 years | 5 years
Cost | 10,000 | 10,000
Accumulated Amortization | 10,000 | 10,000
Carrying Amount | 0 | 0
Certifications [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period | 3 years | 3 years
Cost | 58,722 | 58,722
Accumulated Amortization | 58,722 | 58,722
Carrying Amount | 0 | 0
Other Intangible Assets [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period | 5 years | 5 years
Cost | 21,492 | 21,492
Accumulated Amortization | 21,492 | 21,492
Carrying Amount | $ 0 | $ 0

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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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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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
Name: | us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Balance Type: | debit
Period Type: | instant