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

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//330/tableOfContent + Details
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