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Note 5 - Fair Value Measurements (Tables)
9 Months Ended
Jun. 30, 2022
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
  

June 30, 2022

 
  

Cost Basis

  

Unrealized

Loss

  

Fair Value

  

Cash

Equivalents

  

Short-term Securities

  

Long-term Securities

 

Level 1:

                        

Money market funds

 $1,184  $-  $1,184  $1,184  $-  $- 
                         

Level 2:

                        

Certificates of deposit

  1,025   -   1,025   -   723   302 

Municipal securities

  5,413   (56)  5,357   -   3,906   1,451 

Corporate bonds

  917   (25)  892   -   641   251 

Subtotal

  7,355   (81)  7,274   -   5,270   2,004 
                         

Total

 $8,539  $(81) $8,458  $1,184  $5,270  $2,004 
  

September 30, 2021

 
  

Cost Basis

  

Unrealized

Gain (Loss)

  

Fair Value

  

Cash

Equivalents

  

Short-term Securities

  

Long-term Securities

 

Level 1:

                        

Money market funds

 $932  $-  $932  $932  $-  $- 
                         

Level 2:

                        

Certificates of deposit

  1,494   -   1,494   -   694   800 

Municipal securities

  5,139   (1)  5,138   -   4,205   933 

Corporate bonds

  928   1   929   -   787   142 

Subtotal

  7,561   -   7,561   -   5,686   1,875 
                         

Total

 $8,493  $-  $8,493  $932  $5,686  $1,875 
Fair Value Measurements, Nonrecurring [Table Text Block]
  

Carrying

Value

  

Level 1

  

Level 2

  

Level 3

  

Gain/ (Loss)

 

Operating lease ROU asset

 $7  $-  $-   7  $- 
Holdback Liability [Member]  
Notes Tables  
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

Balance as of September 30, 2021

$687 

Accretion

 36 

Currency translation

 (10)

Balance as of June 30, 2022

$713