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Note 6 - Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

Description

 

Balance at

December 31, 2021

  

Established

in 2022

  

Change in

Fair Value

  

Balance at

March 31, 2022

 
                 

Warrant liability

 $12,818  $-  $(7,408

)

 $5,410 
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

Description

 

Level 1

  

Level 2

  

Level 3

  

Total

 
                 

Warrant liability

 $-  $-  $5,410  $5,410 

Balance at March 31, 2022

 $-  $-  $5,410  $5,410 

Description

 

Level 1

  

Level 2

  

Level 3

  

Total

 
                 

Warrant liability

 $-  $-  $12,818  $12,818 

Balance at December 31, 2021

 $-  $-  $12,818  $12,818