Supplementary Financial Statement Information Inventory (Policies)

12 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Inventory, Policy [Policy Text Block]

Inventories

Inventories are valued at lower of cost or market. Inventory costs are determined by the last-in, first-out (“LIFO”) method for approximately 30% and 23% of our inventories as of September 30, 2019 and 2018. Costs for other inventories have been determined principally by the first-in, first-out (“FIFO”) method.

Costs for inventories costs are determined principally by the FIFO method of inventory accounting, which approximates current cost. However, the LIFO method is used for certain inventories comprising approximately 30% and 23% of our total inventories as of September 30, 2019 and 2018. If the FIFO method of inventory accounting had been used for all inventories, they would have been approximately $0.3 million and $0.6 million higher than reported as of September 30, 2019 and 2018.