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Note 7 - Revenue (Tables)
6 Months Ended
Mar. 31, 2022
Notes Tables  
Disaggregation of Revenue [Table Text Block]
  

Three Months Ended March 31,

  

Six Months Ended March 31,

 

(In thousands)

 

2022

  

2021

  

2022

  

2021

 

United States

 $52,045  $27,744  $101,163  $53,776 

All other countries

  1,450   1,948   3,441   3,008 

Total Net Sales

 $53,495  $29,692  $104,604  $56,784 
  

Three Months Ended March 31,

  

Six Months Ended March 31,

 
  

2022

  

2021

  

2022

  

2021

 

Broadband service providers

  99%  97%  99%  98%

Legacy customers

  1%  3%  1%  2%

Total Net Sales

  100%  100%  100%  100%