Note 7 - Leases - Operating Leases Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Operating lease right-of-use assets	$ 1,419	$ 1,598
Current portion of obligations under operating leases	498	534
Long-term portion of obligations under leases, operating	921	1,064
Total obligations under operating leases	1,419	1,598
Leased property under finance leases	12,063	11,978
Less accumulated amortization	(6,842)	(6,588)
Property and equipment under finance leases, net	5,221	5,390
Current portion of obligations under finance leases	144	167
Long-term portion of obligations under finance leases	456	496
Total obligations under finance leases	$ 600	$ 663