Note 15 - Lease Obligations - Leases Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating lease right-of-use assets	$ 4,948	$ 5,700
Current portion of operating lease liabilities	2,828
Non-current portion of operating lease liabilities	2,120
Total operating lease liabilities	$ 4,948	$ 5,700
Weighted average remaining lease term - operating leases (in years) (Year)	5 years 328 days
Weighted average discount rate - operating leases	8.90%