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Note 3 - Earnings (Loss) Per Share (Details Textual) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Restricted Stock [Member]
Common Stock, Shares, Outstanding	1,943,343	2,866,681	1,943,343	2,866,681
Lower Range Limit [Member]
Investment Warrants, Exercise Price			$ 0.25
Upper Range Limit [Member]
Investment Warrants, Exercise Price			0.60
Lower Range Limit [Member]
Debt Instrument, Convertible, Conversion Price	$ 0.25		0.25
Upper Range Limit [Member]
Debt Instrument, Convertible, Conversion Price	$ 1.25		$ 1.25
Weighted Average Number of Shares Outstanding, Basic	146,978,378	92,350,506	144,029,335	91,999,079
Common Stock, Shares, Outstanding	147,683,879		147,683,879		131,703,577
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			44,902,516	71,302,468
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit			$ 0.045
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit			$ 0.30