Annual report [Section 13 and 15(d), not S-K Item 405]

Note 8 - Stock-based Incentive Plans - Non-vested Restricted Stock Unit Activity (Details)

v3.25.1
Note 8 - Stock-based Incentive Plans - Non-vested Restricted Stock Unit Activity (Details) - $ / shares
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Super League 2014 Stock Option and Incentive Plan [Member]    
Canceled, number of units (in shares) (9,000)  
Canceled, weighted average grant date fair value (in dollars per share) $ 10  
Non-vested restricted stock units, number of units (in shares) 174,000  
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share) $ 4.44  
Restricted Stock Units (RSUs) [Member]    
Non-vested restricted stock units, number of units (in shares)   276,000
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share)   $ 9.76
Granted, number of units (in shares) 658,000  
Granted, weighted average grant date fair value (in dollars per share) $ 0.85  
Vested, number of units (in shares) (588,000)  
Vested, weighted average grant date fair value (in dollars per share) $ 1.64  
Canceled, number of units (in shares) (25,000)  
Canceled, weighted average grant date fair value (in dollars per share) $ 15.43  
Non-vested restricted stock units, number of units (in shares) 321,000  
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share) $ 4.2  
Restricted Stock Units (RSUs) [Member] | Super League 2014 Stock Option and Incentive Plan [Member]    
Non-vested restricted stock units, number of units (in shares)   186,000
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share)   $ 10.87
Granted, number of units (in shares) 33,000  
Granted, weighted average grant date fair value (in dollars per share) $ 0.81  
Vested, number of units (in shares) (36,000)  
Vested, weighted average grant date fair value (in dollars per share) $ 9.51  
Restricted Stock Units (RSUs) [Member] | Outside of The 2014 Plan [Member]    
Non-vested restricted stock units, number of units (in shares)   90,000
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share)   $ 7.5
Granted, number of units (in shares) 625,000  
Granted, weighted average grant date fair value (in dollars per share) $ 0.84  
Vested, number of units (in shares) (552,000)  
Vested, weighted average grant date fair value (in dollars per share) $ 1.13  
Canceled, number of units (in shares) (16,000)  
Canceled, weighted average grant date fair value (in dollars per share) $ 18.56  
Non-vested restricted stock units, number of units (in shares) 147,000  
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share) $ 3.92