Note 5 - Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	[1]
Operating lease assets	$ 8,924	$ 4,827
Finance lease assets	2,493
Total leased assets	11,417
Current operating lease liabilities	614	858
Current finance lease liabilities	652	557
Long-term operating lease liabilities	8,832	4,366
Long term finance lease liabilities	1,320	$ 1,451
Total lease liabilities	$ 11,418

[1] The balance sheet at December 31, 2019 has been derived from the audited financial statements at that date