Note 11 - Stockholders' Equity (Details) - The 2014 Private Placement (USD $)	6 Months Ended	3 Months Ended
	Jun. 30, 2014	Mar. 31, 2014 2014 Private Placement [Member] Common Stock Including Additional Paid in Capital [Member]	Mar. 31, 2014 2014 Private Placement [Member]
Note 11 - Stockholders' Equity (Details) - The 2014 Private Placement [Line Items]
Gross proceeds from private placement	$ 3,370,000	$ 2,034,000	$ 3,390,000
Less: cash issuance costs – legal fees			(20,000)
Recorded in additional paid-in capital and common stock			2,014,000
Less: gross proceeds allocated to warrants liability – investors			$ (1,356,000)