Note 2 - Useful Lives of Related Assets (Details)	12 Months Ended
	Dec. 31, 2015
Minimum [Member] | Equipment [Member]
Property and equipment useful lives	3 years
Minimum [Member] | Patents [Member]
Patents (in years)	2 years
Maximum [Member] | Equipment [Member]
Property and equipment useful lives	5 years
Maximum [Member] | Patents [Member]
Patents (in years)	8 years
Office Equipment [Member]
Property and equipment useful lives	5 years
Computer Equipment [Member]
Property and equipment useful lives	2 years
Leasehold Improvements [Member]
Property and equipment useful lives