Note 11 - Stock-based Compensation (Details) - Stock Option Activities (USD $)			6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Note 11 - Stock-based Compensation (Details) - Stock Option Activities [Line Items]
Outstanding as of January 1,	7,114,250	5,836,500
Outstanding as of January 1,	$ 0.20	$ 0.45
Shares	7,114,250	5,836,500	6,555,000	4,585,500	16,847,500	3,330,250
Weighted Average Exercise Price Per Share	$ 0.20	$ 0.45	$ 0.19	$ 0.46	$ 0.27	$ 0.41
Granted					10,650,000
Granted, weighted average exercise price per share					$ 0.31
Forfeited			(559,250)	(1,251,000)	(357,500)	(1,255,250)
Forfeited, weighted average exercise price per share			$ 0.29	$ 0.43	$ 0.29	$ 0.57