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Note 4 - Fair Value Measurements (Tables)
6 Months Ended
Mar. 31, 2022
Notes Tables  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
  

Fair Value Measurements at March 31, 2022

 

(In thousands)

 

Total

  

Level 1

  

Level 2

  

Level 3

 

Investment securities:

                

U.S treasury securities

 $15,463  $-  $15,463  $- 

Certificates of deposit

  13,724   -   13,724   - 

Total Investments securities

 $29,187  $-  $29,187  $-