Note 6 - ROU Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Operating lease	$ 3,408	$ 4,063
Total right of use assets	3,408	4,063
Operating lease	959	806
Operating Lease, Liability, Noncurrent	2,449	3,257
Total lease liabilities	$ 3,408	$ 4,063