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Inventories | 9 Months Ended
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Jun. 30, 2023
Inventory Disclosure [Abstract] |
Inventories | Inventories Inventories consist of:
| June 30, 2023 |  | September 30, 2022
Raw materials and supplies | $ | 1,763 |  |  | $ | 2,968 |
Work-in-process | 5,342 |  |  | 3,356 |
Finished goods | 3,505 |  |  | 2,645 |
Total inventories, net | $ | 10,610 |  |  | $ | 8,969 |
For a portion of the Company's inventory, cost is determined using the last-in, first-out ("LIFO") method. Approximately 19% and 42% of the Company’s inventories at June 30, 2023 and September 30, 2022, respectively, use the LIFO method. An actual valuation of inventory under the LIFO method is made at the end of each fiscal year based on the inventory levels and costs existing at that time. Accordingly, interim LIFO calculations must be based on management’s estimates of expected year-end inventory levels and costs. Because the actual results may vary from these estimates, the annual results may differ from interim results as they are subject to adjustments based on the differences between the estimates and the actual results. The first-in, first-out (“FIFO”) method is used for the remainder of the inventories, which are stated at the lower of cost or net realizable value ("NRV"). If the FIFO method had been used for the inventories for which cost is determined using the LIFO method, inventories would have been $9,668 and $9,939 higher than reported at June 30, 2023 and September 30, 2022, respectively. Net realizable value is the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal, and transportation. The Company estimates net realizable value, excess and obsolescence and shrink reserves for its inventory based upon historical experience, historical and projected sales trends and the age of inventory on hand. As of June 30, 2023 and September 30, 2022, our inventory valuation allowances were $3,857 and $5,084, respectively.

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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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