Note 9 - Income Taxes - Effective Income Tax Rates (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Computed expected tax (benefit) expense	$ (167,000)	$ (1,689,000)
State income tax expense, net of Federal tax effect	(23,000)	(234,000)
Other, net (primarily change in prior estimates)	(163,000)	59,000
Change in valuation allowance (regarding current year activity)	363,000	2,403,000
Income Tax (Benefit) Expense	$ 8,000	$ 539,000