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Inventories
 12 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Inventories

8. Inventories

Inventories consisted of the following (in thousands):

 

 

 

AS OF SEPTEMBER 30,

 

 

 

2022

 

 

2021

 

Finished goods

 

$

14,653

 

 

$

14,968

 

Work in process

 

 

6,230

 

 

 

8,247

 

Raw materials

 

 

25,609

 

 

 

24,720

 

Obsolescence reserve (net realizable value adjustment)

 

 

(13,971

)

 

 

(13,636

)

 

 

 

32,521

 

 

 

34,299

 

Less current portion

 

 

19,995

 

 

 

16,196

 

Non-current portion

 

$

12,526

 

 

$

18,103

 

 

Inventory obsolescence expense totaled approximately $3.2 million and $3.0 million during fiscal years 2022 and 2021, respectively. Raw materials include semi-finished goods and component parts that totaled approximately $20.7 million and $22.7 million at September 30, 2022 and 2021, respectively.