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Note 10 - Stockholders' Equity - Summary of Restricted Stock Unit Activity (Details) - shares
6 Months Ended 9 Months Ended
Sep. 30, 2024
Dec. 31, 2024
Granted, units (in shares)   0
Forfeited or expired, units (in shares)   (15,000)
Restricted Stock Units (RSUs) [Member]    
Outstanding, shares (in shares) 182,500 182,500
Granted (in shares) 50,000  
Vested (in shares) (100,417)  
Outstanding, shares (in shares) 132,083  
Restricted Stock Units (RSUs) [Member] | Podcast One 2022 Equity Plan [Member]    
Outstanding, shares (in shares) 591,560 591,560
Vested (in shares)   (228,335)
Outstanding, shares (in shares)   689,442
Granted, units (in shares)   339,467
Forfeited or expired, units (in shares)   (13,250)