Note 10 - Lease Obligations -Balance Sheets of the Company's Operating Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Liabilities:
Current operating lease liabilities	$ 1,819	$ 1,179
Non-current operating lease liabilities	5,962	3,871
Total operating lease liabilities	7,781	5,050
Other Assets [Member]
Assets:
Operating lease assets, net	$ 6,472	$ 3,802