v3.25.2
Note 4 - Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2025
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
      

Fair Value Measurements Using

 
      Quoted Prices in  Significant Other  Significant 
      

Active Markets

  

Observable

  

Unobservable

 
      

for Identical

  

Inputs

  

Inputs

 
  

Total

  

Assets (Level 1)

  

(Level 2)

  

(Level 3)

 

As of June 30, 2025:

                

Assets:

                

Cash equivalents

 $19,848  $19,848  $—  $— 

U.S. Government agency securities

  55,804   55,804   —   — 

Certificates of deposits

  6,200   —   6,200   — 

Corporate debt securities

  67,370   —   67,370   — 

Commercial paper

  10,612   —   10,612   — 

Yankee debt

  2,336   —   2,336   — 

Asset-backed securities

  12,378   —   12,378   — 

Total financial assets

 $174,548  $75,652  $98,896  $— 
                 

As of December 31, 2024:

                

Cash equivalents

 $21,042  $21,042  $—  $— 

U.S. Government agency securities

  57,155   57,155   —   — 

Certificates of deposits

  8,524   —   8,524   — 

Corporate debt securities

  80,822   —   80,822   — 

Commercial paper

  22,275   —   22,275   — 

Yankee debt

  2,146   —   2,146   — 

Asset-backed securities

  11,895   —   11,895   — 

Total financial assets

 $203,859  $78,197  $125,662  $—