Note 2 - Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Prepaid subscriptions	$ 556	$ 423
Prepaid insurance	300	619
Prepaid marketing and sponsorships	246	0
Other	468	107
Total prepaid expenses and other current assets	$ 1,570	$ 1,149