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Investments (Tables)
 12 Months Ended
Sep. 30, 2021
Investments Debt And Equity Securities [Abstract]  
Summary of Short-Term Investments

 

The Company’s short-term investments were composed of the following (in thousands):

 

 

 

AS OF SEPTEMBER 30, 2021

 

 

 

Amortized

Cost

 

 

Unrealized

Gains

 

 

Unrealized

Losses

 

 

Estimated

Fair Value

 

Short-term investments:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corporate bonds

 

$

9,511

 

 

$

—

 

 

$

(15

)

 

$

9,496

 

Total

 

$

9,511

 

 

$

—

 

 

$

(15

)

 

$

9,496