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Note 8 - Fair Value of Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

June 30, 2022

 

Estimated Fair Value

  

Level 1

  

Level 2

  

Level 3

 

Assets:

                

Money market account

 $51,809  $51,809  $-  $- 

December 31, 2021

 

Estimated Fair Value

  

Level 1

  

Level 2

  

Level 3

 

Assets:

                

Money market account

 $51,796  $51,796  $-  $- 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

Warrant liability

    

Beginning balance

 $13,003 

Reclassification of equity upon adoption of accounting standard

  (13,003

)

Issuance of warrants

  - 

Change in fair value

  - 

Ending balance

 $-