Note 8 - Leases - Components of Lease Expense and Cash Flows from Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Amortization of right-of use assets, included in cost of goods sold	$ 145	$ 97
Interest on lease liabilities	52	21
Fixed lease cost	80	515
Variable lease cost	61	168
Short-term lease cost	188	85
Total lease cost	526	886
Operating cash flows from finance leases	52	21
Operating cash flows from operating leases	80	515
Financing cash flows from finance leases	$ 150	$ 104