Note 13 - Related Party Transactions (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Employee Service [Member] | Company That Employed The Chief Financial Officer [Member]
Related Party Transaction, Amounts of Transaction	$ 8	$ 25	$ 95	$ 45
Non-exclusive Agreement [Member]
Related Party Transaction, Amounts of Transaction	$ 54	$ 53	$ 116	$ 84