Note 12 - Stockholders' (Deficit) - Warrants (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class of Warrant or Right, Exercise Price of Warrants or Rights
Class of Warrant or Right, Outstanding	27,860,000	22,900,000	48,463,517
Weighted average remaining contractual life (Year)	2 years 259 days	1 year 277 days
Weighted average exercise price (in dollars per share)	$ 0.42	$ 0.46
Warrants exercisable at December 31, 2016 (in shares)	27,860,000	22,900,000
Warrants exercisable Weighted average exercise price (in dollars per share)	$ 0.42	$ 0.46
Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	0.25	0.25
Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.60	$ 0.60