Note 13 - Income Taxes - Provision for Income Tax Benefit (Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Federal	$ (653)	$ 0
State	(298)	(307)
Federal	(6,121)	(7,223)
State	0	0
Change in valuation allowance	7,557	7,223
Total provision for income taxes	$ 485	$ (307)