Note 5 - Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Operating lease assets	$ 4,827
Finance lease assets	2,447
Total leased assets	7,274
Current operating lease liabilities	858
Current finance lease liabilities	557	337
Long-term operating lease liabilities	4,366
Long term finance lease liabilities	1,451	$ 951
Total lease liabilities	$ 7,232