Note 7 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Income benefit at statutory rate	$ 938	$ 480
State income taxes (benefit), net of federal income tax benefit	1,066	57
Permanent differences	10	(91)
Change in valuation allowance	(2,030)	(450)
Other	$ 16	$ 4

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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