Note 11 - Fair Value Measures (Details) - Assets and Liabilities Measured at Fair Value (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Feb. 22, 2013	Jan. 16, 2013	Dec. 31, 2012
Note 11 - Fair Value Measures (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Convertible notes	$ 4,904,000	$ 4,537,000
Warrant and option liabilities	3,691,000	2,680,000
Warrant and option liabilities		2,680,000
Total Liabilities	8,595,000	7,217,000	21,963,000	17,490,000	12,592,000	11,898,000
Fair Value, Inputs, Level 3 [Member]
Note 11 - Fair Value Measures (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Convertible notes	4,904,000	4,537,000
Warrant and option liabilities	3,691,000
Warrant and option liabilities		2,680,000
Total Liabilities	$ 8,595,000	$ 7,217,000