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Note 2 - Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

March 31,

  

March 31,

 
  

2024

  

2023

 

Balance as of beginning of year

 $701  $984 

Amounts accrued

  -   237 

Write-offs charged against the allowance

  -   (4)

Balance as of end of period

 $701  $1,217 
Schedule of Inventory, Current [Table Text Block]
  

March 31,

  

December 31,

 
  

2024

  

2023

 

Raw materials

 $2,384  $2,063 

Work-in-process

  681   504 

Total inventories

 $3,065  $2,567