Inventories

6 Months Ended

Mar. 31, 2021

Inventories consist of:


	March 31, 2021		September 30, 2020
Raw materials and supplies	$	6,379	$	6,548
Work-in-process	3,564		3,786
Finished goods	5,625		5,235
Total inventories	$	15,568	$	15,569

For a portion of the Company's inventory, cost is determined using the last-in, first-out ("LIFO") method. Approximately 49% and 47% of the Company’s inventories at March 31, 2021 and September 30, 2020, 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, calculations are subject to many factors beyond management’s control, and 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. If the FIFO method had been used for the inventories for which cost is determined using the LIFO method, inventories would have been $8,621 and $8,286 higher than reported at March 31, 2021 and September 30, 2020, respectively.