Intangible Assets (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Summary of intangible assets
Weighted Average Amortization Period (years)	3 years 10 months 24 days	4 years 4 months 24 days
Cost	$ 2,355,419	$ 2,355,419
AccumulatedAmortization	1,443,426	1,275,853
Net Book Value	911,993	1,079,566
Licensing Agreements [Member]
Summary of intangible assets
Weighted Average Amortization Period (years)	8 years	8 years 8 months 12 days
Cost	462,234	462,234
AccumulatedAmortization	245,154	224,708
Net Book Value	217,080	237,526
Patents [Member]
Summary of intangible assets
Weighted Average Amortization Period (years)	2 years 10 months 24 days	3 years 3 months 18 days
Cost	1,893,185	1,893,185
AccumulatedAmortization	1,198,272	1,051,145
Net Book Value	$ 694,913	$ 842,040