Note 12 - Stockholders' (Deficit) (Details) - Warrants - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class of Warrant or Right [Line Items]
Number outstanding (in Shares)	24,690,000	22,900,000	48,463,517
Weighted average remaining contractual life, outstanding	1 year 226 days	1 year 277 days
Weighted average exercise price, outstanding	$ 0.45	$ 0.46
Number exercisable, exercisable (in Shares)	24,690,000	22,900,000
Weighted average exercise price, exercisable	$ 0.45	$ 0.46
Minimum [Member]
Class of Warrant or Right [Line Items]
Range of exercise price	0.25	0.25
Maximum [Member]
Class of Warrant or Right [Line Items]
Range of exercise price	$ 0.60	$ 0.60