XML 42 R30.htm IDEA: XBRL DOCUMENT v3.23.2
Note 6 - Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
      

Fair Value Measurements Using

 
      

Quoted Prices

  

Significant

 
      

in Active

  

Other

 
  

Balance as of

  

Markets for

  

Observable

 
  

June 30,

  

Identical Assets

  

Inputs

 
  

2023

  

(Level 1)

  

(Level 2)

 

Assets:

            

Cash equivalents

            

Money market funds

 $596  $596  $ 

Marketable securities

            

U.S. government

  18,915   18,915    

Corporate bonds

  6,485      6,485 

Commercial paper

  2,011      2,011 

Certificates of deposit

  7,733      7,733 

Total marketable securities

  35,144   18,915   16,229 

Total assets at fair value

 $35,740  $19,511  $16,229 
      

Fair Value Measurements Using

 
      

Quoted Prices

  

Significant

 
      

in Active

  

Other

 
  

Balance as of

  

Markets for

  

Observable

 
  

December 31,

  

Identical Assets

  

Inputs

 
  

2022

  

(Level 1)

  

(Level 2)

 

Marketable securities

            

U.S. government

 $28,693  $28,693  $ 

Corporate bonds

  2,387      2,387 

Commercial paper

  9,392      9,392 

Certificates of deposit

  4,084      4,084 

Total marketable securities

 $44,556  $28,693  $15,863