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Inventories
 12 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Inventories . Inventories

 

The components of inventories are as follows, in thousands:

 

 

 

September 30,

 

 

 

2023

 

 

2022

 

Purchased parts and raw materials

 

$

22,627

 

 

$

15,377

 

Work-in-process

 

 

7,774

 

 

 

6,146

 

Finished goods

 

 

4,444

 

 

 

3,965

 

 

 

$

34,845

 

 

$

25,488

 

 

In the Material and Substrate segment, we recorded $1.5 million related to the write-off of inventory for our polishing machine products in the year ended September 30, 2023.