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Note 4 - Accrued Liabilities (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
  

June 30, 2023

  

December 31, 2022

 

Salary and payroll tax accrual

 $11,252  $13,255 

Taxes payable

  3,013   2,903 

Current portion of operating lease liability

  2,542   2,287 

License fee obligation

  1,000   1,000 

Placement fees payable

  6,314   6,314 

Accrued other

  9,016   11,503 

Total accrued liabilities

 $33,137  $37,262