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Subsequent Events	12 Months Ended
	Apr. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Note 22 – Subsequent Events Dividend On June 22, 2021, our Board of Directors declared a quarterly dividend of $0.3450 per share, or approximately $19.3 million, on our Class A and Class B Common Stock.  The dividend is payable on July 21, 2021 to shareholders of record on July 6, 2021. UK Corporate Tax Rate As previously disclosed in our Quarterly Report on Form 10-Q filed with the SEC on March 5, 2021, on March 3, 2021, in the UK Budget, the Chancellor of the Exchequer announced a proposed increase in the UK corporate tax rate from 19% to 25%, effective April 2023. On June 10, 2021, the UK officially increased its corporate tax rate from 19% to 25% effective April 2023. We estimate that this statutory tax rate increase will result in a nonrecurring, noncash US GAAP deferred tax expense of approximately $20 million in our three months ended July 31, 2021.

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- Definition

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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