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Note 5 - Fair Value Measurement and Fair Value of Financial Instruments (Tables)
12 Months Ended
Sep. 30, 2024
Notes Tables  
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
  

As of September 30, 2024

  

As of September 30, 2023

 
  

Montage Capital

  

Series D Preferred

  

Montage Capital

  

Series C Preferred

  

Series D Preferred

 

Volatility

  51.0%  52.5%  60.7%  51.7%  73.6%

Risk-free rate

  4.8%  3.7%  5.0%  5.5%  4.8%

Stock price

 $1.15  $1.15  $0.83  $0.83  $0.83 
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
  

As of September 30, 2024

     
  

Level 1

  

Level 2

  

Level 3

  

Total

 

Liabilities:

                

Warrant liabilities:

                

Montage

  -   -   10   10 

Series A and C

  -   -   -   - 

Series D

  -   -   88   88 

Total warrant liabilities

 $-  $-  $98  $98 
  

As of September 30, 2023

     
  

Level 1

  

Level 2

  

Level 3

  

Total

 

Assets:

                

Goodwill, net

 $-  $-  $8,468  $8,468 

Liabilities:

                

Warrant liabilities:

                

Montage

  -   -   12   12 

Series A and C

  -   -   11   11 

Series D

  -   -   151   151 

Total warrant liabilities

 $-  $-  $174  $174 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
  

Contingent Consideration Obligations

  Warrant Liabilities 

Balance at beginning of period, October 1, 2022

 $250  $749 

Additions

  -   - 

Payments

  (250)  - 

Adjustment to fair value

  -   (575)

Balance at end of period, September 30, 2023

 $-  $174 

Additions

  -   - 

Exercises or payments

  -   - 

Adjustment to fair value

  -   (76)

Balance at end of period, September 30, 2024

 $-  $98