Note 3 - Leases - Summary of Future Minimum Rental Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
2024 (remaining), operating leases	$ 9
2024 (remaining), finance lease	21
2025, operating leases	30
2025, finance lease	82
2026, operating leases	24
2026, finance lease	83
2027, operating leases	7
2027, finance lease	85
2028, operating leases	1
2028, finance lease	86
Thereafter, operating leases	0
Thereafter, finance lease	2,723
Total undiscounted rental payments, operating leases	71
Total undiscounted rental payments, finance lease	3,080
Less imputed interest, operating leases	4
Less imputed interest, finance lease	2,291
Total lease liabilities, operating leases	67	$ 112
Total lease liabilities, finance lease	$ 789	$ 721