Note 7 - Leases - Operating Leases Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Operating lease right-of-use assets	$ 1,418	$ 1,270
Leased property under finance leases	13,329	13,131
Current portion of obligations under operating leases	340	432
Less accumulated amortization	(7,806)	(7,420)
Long-term portion of obligations under operating leases	1,078	838
Leased property under finace leases, net	5,523	5,711
Total obligations under operating leases	1,418	1,270
Current portion of obligations under finance leases	189	198
Long-term portion of obligations under finance leases	634	598
Total obligations under finance leases	$ 823	$ 796