Intangible Assets (Details) (USD $)	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Summary of intangible assets
Weighted Average Amortization Period (years)	2 years 4 months 24 days	2 years 7 months 6 days
Cost	$ 2,355,419	$ 2,355,419
Accumulated Amortization	1,999,509	1,945,470
Net Book Value	355,910us-gaap_FiniteLivedIntangibleAssetsNet	409,949us-gaap_FiniteLivedIntangibleAssetsNet
Licenses [Member]
Summary of intangible assets
Weighted Average Amortization Period (years)	4 years 6 months	4 years 8 months 12 days
Cost	462,234	462,234
Accumulated Amortization	313,211	306,495
Net Book Value	149,023	155,739
Patents [Member]
Summary of intangible assets
Weighted Average Amortization Period (years)	1 year 8 months 12 days	1 year 10 months 24 days
Cost	1,893,185	1,893,185
Accumulated Amortization	1,686,298	1,638,975
Net Book Value	$ 206,887	$ 254,210

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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

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- Definition

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

+ References

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- Definition

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

+ References

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