Note 7 - Income Taxes (Detail) - 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, 2012	Dec. 31, 2011	Dec. 31, 2010
Expected federal income tax benefit at 34%	$ (6,614)	$ (5,720)	$ (5,405)
Loss with no tax benefit provided	5,535	4,880	4,545
State income tax	10	7	6
State tax benefit	(321)	0	0
Stock Options	0	(6)	154
Non-deductible expenses and other	1,079	846	706
Income (benefit) tax expense	$ (311)	$ 7	$ 6