Note 8 - Other Current Assets - Summary of Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Advances to vendors	$ 1,925	$ 2,534
Prepaid expenses	1,706	1,834
VAT receivable	2,870	2,716
Total	$ 6,501	$ 7,084