Note 2 - Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Prepaid subscriptions	$ 578	$ 423
Prepaid insurance	157	619
Prepaid marketing and sponsorships	246	0
Debt and equity issuance costs	12,088	0
Other	259	107
Total prepaid expenses and other current assets	$ 13,328	$ 1,149