Inventories

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventories

6.  Inventories

Inventories are valued at the lower of cost or market for last-in, first-out (“LIFO”) inventory and lower of cost or net realizable value for first-in, first-out (“FIFO”) inventory. Approximately 30 percent of inventories are valued using the LIFO method of determining cost. All other inventories are valued at the FIFO method of determining cost. An actual valuation of inventory under the LIFO method can be made only at the end of each year based on inventory levels and costs at that time. Accordingly, interim LIFO calculations must be based on management’s estimates of expected year-end inventory levels and costs. Because these calculations are subject to many factors beyond management’s control, annual results may differ from interim results as they are subject to the final year-end LIFO inventory valuation. Based on management’s projections of inventory levels and costs, no adjustment to the LIFO reserve was recorded for the quarters ended March 31, 2019 or 2018.

Inventories consisted of the following:

	March 31,		December 31,
	2019		2018
Finished and in-process products	$	29,287	$	27,960
Raw materials and supplies		13,202		15,636
	$	42,489	$	43,596