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Note 4 - Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
      

Active Markets

  

Significant Other

  

Significant

     
      

for Identical Assets

  

Observable Inputs

  

Unobservable Inputs

     
  

December 31, 2022

  

(Level 1)

  

(Level 2)

  

(Level 3)

  

Amortized Cost

 

Cash equivalents:

                    

Money Market Funds

 $67,801  $67,801  $-  $-  $67,801 
      

Active Markets

  

Significant Other

  

Significant

     
      

for Identical Assets

  

Observable Inputs

  

Unobservable Inputs

     
  

December 31, 2021

  

(Level 1)

  

(Level 2)

  

(Level 3)

  

Amortized Cost

 

Cash equivalents:

                    

Money Market Funds

 $67,046  $67,046  $-  $-  $67,046 
                     

Other current and long-term liabilities:

                    

Contingent Consideration - Short Term

 $4,315  $-  $-  $4,315  $- 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
  

Years Ended December 31

 
  

2022

  

2021

 

Balance, beginning January 1

 $4,315  $35,410 

Additions

  -   - 

Payments

  (4,315

)

  (10,000

)

Change in fair value

  -   (21,095

)

Balance, ending December 31

 $-  $4,315