Annual report pursuant to Section 13 and 15(d)

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

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Note 8 - Stock-based Incentive Plans - Non-vested Restricted Stock Unit Activity (Details)
 12 Months Ended
Dec. 31, 2023
$ / shares
shares
Super League 2014 Stock Option and Incentive Plan [Member]  
Canceled, number of units (in shares) | shares (71,000)
Canceled, weighted average grant date fair value (in dollars per share) | $ / shares $ 35.95
Non-vested restricted stock units, number of units (in shares) | shares 186,000
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share) | $ / shares $ 10.87
Restricted Stock Units (RSUs) [Member]  
Non-vested restricted stock units, number of units (in shares) | shares 102,000
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share) | $ / shares $ 35.34
Granted, number of units (in shares) | shares 320,000
Granted, weighted average grant date fair value (in dollars per share) | $ / shares $ 7.78
Vested, number of units (in shares) | shares (75,000)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares $ 11.39
Canceled, number of units (in shares) | shares (71,000)
Canceled, weighted average grant date fair value (in dollars per share) | $ / shares $ 35.95
Non-vested restricted stock units, number of units (in shares) | shares 276,000
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share) | $ / shares $ 9.76
Restricted Stock Units (RSUs) [Member] | Super League 2014 Stock Option and Incentive Plan [Member]  
Non-vested restricted stock units, number of units (in shares) | shares 101,000
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share) | $ / shares $ 35.64
Granted, number of units (in shares) | shares 177,000
Granted, weighted average grant date fair value (in dollars per share) | $ / shares $ 9.25
Vested, number of units (in shares) | shares (21,000)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares $ 30.94
Non-vested restricted stock units, number of units (in shares) | shares  
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share) | $ / shares  
Restricted Stock Units (RSUs) [Member] | Outside of The 2014 Plan [Member]  
Non-vested restricted stock units, number of units (in shares) | shares 1,000
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share) | $ / shares $ 18.19
Granted, number of units (in shares) | shares 143,000
Granted, weighted average grant date fair value (in dollars per share) | $ / shares $ 5.97
Vested, number of units (in shares) | shares (54,000)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares $ 3.8
Canceled, number of units (in shares) | shares 0
Canceled, weighted average grant date fair value (in dollars per share) | $ / shares $ 0
Non-vested restricted stock units, number of units (in shares) | shares 90,000
Non-vested restricted stock units, weighted average grant date fair value (in dollars per share) | $ / shares $ 7.5