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Note C - Significant Customers (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Disaggregation of Revenue [Table Text Block]
  

Three Months Ended

 
  

March 31,

 
  

2024

  

2023

 

Customer

 

Percentage of Revenue

 

DoD

  28%  29%

Amazon

  34%  35%

DHL

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

March 31, 2024

December 31, 2023

Customer

Accounts Receivable

DoD

$64,050$56,848

Amazon

 83,209 74,509

DHL

 9,777 8,040
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
    

Common Shares in millions

  
 

Exercise price

 

Vested

 

Non-Vested

 

Expiration

           

2018 Investment Agreement

$21.53  14.8  0.0 

December 20, 2025

2018 Investment Agreement

$20.40  7.0  0.0 

December 20, 2025