Note 12 - Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ROU assets	$ 59
Long-term lease liability	15,707	$ 14,411
Other Assets [Member]
ROU assets	59
Other Liabilities [Member]
Short-term lease liability	44
Other Noncurrent Liabilities [Member]
Long-term lease liability	$ 15