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Inventories	12 Months Ended
	Dec. 31, 2021
Inventories [Abstract]
Inventories	Note 3, Inventories: Inventories are measured using the last-in, first-out (LIFO) method of valuation because it results in a better matching of current costs and revenues. The excess of current costs over our carrying value of inventories was approximately $34,704,000 and $22,394,000 at December 31, 2021 and 2020, respectively. The use of the LIFO valuation method as compared to the FIFO method had a negative impact on our cost of goods sold of approximately $12,310,000 in 2021, $636,000 in 2020 and $1,811,000 in 2019.  During 2020 and 2019, there were liquidations of LIFO inventory layers. The effect of the liquidations (included in the preceding LIFO impact amounts) decreased cost of goods sold. The effect of the liquidations during 2020 decreased cost of goods sold by approximately $562,000 or $0.03 per diluted share of common stock and was immaterial in 2019. We believe this information is meaningful to the users of these consolidated financial statements for analyzing the effects of price changes, for better understanding our financial position and for comparing such effects with other companies.

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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-URI http://asc.fasb.org/topic&trid=2126998

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