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