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Note C - Significant Customers (Tables)
6 Months Ended
Jun. 30, 2024
Notes Tables  
Disaggregation of Revenue [Table Text Block]
  

Three Months Ended

  

Six Months Ended

 
  

June 30,

  

June 30,

 
  

2024

  

2023

  

2024

  

2023

 

Customer

 

Percentage of Revenue

  

Percentage of Revenue

 

DoD

  33%  32%  31%  30%

Amazon

  30%  34%  32%  34%

DHL

  14%  12%  13%  13%
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
  

June 30, 2024

  

December 31, 2023

 

Customer

 

Accounts Receivable

 

DoD

 $50,319  $56,848 

Amazon

  76,798   74,509 

DHL

  13,520   8,040 
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
  

Vested

  

Unvested

 
         

December 31, 2023

  21.8   2.9 

New grants

  0.7   2.2 

June 30, 2024

  22.5   5.1