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Note 2 - Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

September 30,

  

September 30,

 
  

2025

  

2024

 

Balance as of beginning of period

 $708  $701 

Amounts accrued

  201   186 

Write-offs charged against the allowance

  (200)  (1)

Balance as of end of period

 $709  $886 
Schedule of Inventory, Current [Table Text Block]
  

September 30,

  

December 31,

 
  

2025

  

2024

 

Raw materials

 $3,905  $1,465 

Work-in-process

  400   530 

Total inventories

 $4,305  $1,995