Note 7 - Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating cash flows from operating leases	$ (1,276)	$ (1,253)
Operating cash flows from finance leases	(11)	(16)
Payments of finance lease obligations	$ (81)	$ (135)