Note 7 - Income Taxes (Details) - A Reconciliation of the Income Tax Benefit to the Statutory Federal Income Tax Rate (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
A Reconciliation of the Income Tax Benefit to the Statutory Federal Income Tax Rate [Abstract]
Expected federal income tax benefit at 34%	$ (7,698)	$ (6,614)	$ (5,720)
Loss with no tax benefit provided	7,108	5,535	4,880
State income tax	6	10	7
State tax benefit		(321)
Stock Options			(6)
Non-deductible expenses and other	590	1,079	846
Income tax (benefit) expense	$ 6	$ (311)	$ 7