Note 9 - Income Taxes (Detail) (USD $)			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Exercise of Disqualifying Stock Options [Member]
Deferred Tax Assets, Gross	$ 20,344,000	$ 21,770,000
Deferred Tax Assets, Operating Loss Carryforwards	14,491,000	16,728,000
Operating Loss Carryforwards	40,500,000
Tax Benefit from Stock Options Exercised			1,000,000
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	7,500,000
Deferred Tax Assets, Valuation Allowance	$ 20,344,000	$ 3,268,000