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Interim LIFO Calculations	6 Months Ended
	Jun. 30, 2018
Interim LIFO Calculations [Abstract]
Interim LIFO Calculations	NOTE D – Interim LIFO Calculations An actual valuation of inventory under the LIFO method can be made only at the end of each year based on actual inventory levels and costs at that time. Accordingly, interim LIFO calculations must necessarily be based on management’s estimates of inventory levels and inflation rates. Since these estimates may be affected by factors beyond management’s control, interim results are subject to change based upon the final year-end LIFO inventory valuations.

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- References

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-URI http://asc.fasb.org/topic&trid=2126998

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