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Note 13 - Revenues (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Disaggregation of Revenue [Table Text Block]
  

Three Months Ended

  

Nine Months Ended

 
  

September 30,

  

September 30,

 
  

2025

  

2024

  

2025

  

2024

 

Product sales

 $4,598  $10,668  $17,352  $38,219 

Maintenance fees

  83   32   221   85 

Professional services

  967   332   1,114   753 

Shipping and handling

  141   484   546   2,011 

Discounts and allowances

  (1)  (34)  (46)  (213)

Total revenues

 $5,788  $11,482  $19,187  $40,855 
Revenue from Customers by Geographic Areas [Table Text Block]
  

For the Three Months Ended

  

Nine Months Ended

 
  

September 30,

  

September 30,

 
  

2025

  

2024

  

2025

  

2024

 

United States

 $3,386  $7,878  $12,007  $33,051 

Serbia

  1,037   1,626   2,926   5,047 

Romania

  321   601   1,392   1,140 

Croatia

  316   205   1,015   472 

Montenegro

  244   84   581   446 

Bosnia

  424   111   714   197 

Other

  60   977   552   502 

Total revenue

 $5,788  $11,482  $19,187  $40,855 
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
  

For the Nine Months Ended

 
  

September 30,

 
  

2025

  

2024

 

Beginning Balance

 $1,647  $1,230 

Additions

  921   518 

Recognized in revenue

  

(245

)  (167)

Ending Balance

 $2,323  $1,581