Note 5 - Income Taxes (Detail) - Reconciliation of the beginning and ending amount of unrecognized tax benefits (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Beginning Balance	$ 65,000	$ 43,000
Additions for tax positions of prior years	28,000	22,000
Ending Balance	$ 93,000	$ 65,000