Note 2 - Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Prepaid subscriptions	$ 278	$ 85
Prepaid insurance	484	272
Prepaid marketing and sponsorships	0	60
Other	547	418
Total prepaid expenses and other current assets	$ 1,309	$ 835