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Reclassifications	3 Months Ended
	Jul. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reclassifications	Reclassifications During the second quarter of fiscal year 2019, the Company changed its method of accounting for its Domestic segment’s inventory from the LIFO method to the FIFO method.  The Company reclassified certain amounts in the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive income, the condensed consolidated statements of stockholders’ equity and the condensed consolidated statements of cash flows for the three-month period ended July 31, 2018 to conform to the current period format.

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- Definition

The entire disclosure for classifying current financial statements, which may be different from classifications in the prior year's financial statements. Disclose any material changes in classification including an explanation of the reason for the change and the areas impacted.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-URI http://asc.fasb.org/topic&trid=2122149

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