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Note 10 - Income Taxes - Components of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Federal	$ 1	$ 15
State	3	13
Total current tax provision	4	28
Federal	0	0
State	0	0
Total deferred tax provision	0	0
Income tax expense	$ 4	$ 28

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