Note 8 - Leases - Aggregate Future Lease Payments (Details) $ in Thousands	Sep. 30, 2021 USD ($)
Remainder of 2021, finance	$ 4
Remainder of 2021, operating	304
2022, finance	17
2022, operating	1,054
2023, finance	17
2023, operating	115
2024, finance	17
2024, operating	73
2025, finance	17
2025, operating	62
Thereafter, finance	23
Thereafter, operating	32
Total lease payments, finance	95
Total lease payments, operating	1,640
Less: Interest, finance	(6)
Less: Interest, operating	(47)
Present value of lease liabilities, finance	89
Present value of lease liabilities, operating	$ 1,593