Note 11 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2012			2013
Net operating loss carryforwards	$	3,951,000		$	4,203,000
Research and development credits		162,000			162,000
Start-up expenses capitalized		5,726,000			7,156,000
Accruals and reserves		150,000			99,000
Property and equipment		(22,000	)		(11,000	)
		9,967,000			11,609,000
Less: Valuation allowance		(9,967,000	)		(11,609,000	)
	$	-		$	-