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Note 2 - Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Prepaid subscriptions | $ 438 | $ 85
Prepaid insurance | 41 | 272
Prepaid marketing and sponsorships | 60 | 60
Other | 462 | 418
Total prepaid expenses and other current assets | $ 1,001 | $ 835

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