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Aggregate dividends paid during the period for each share of common stock outstanding.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586

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- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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Capital Stock and Changes in Capital Accounts, Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Jul. 22, 2020	Jul. 31, 2020	Jul. 31, 2019
Cash Dividends [Abstract]
Total Dividend		$ 19,261	$ 19,252
Class A [Member]
Cash Dividends [Abstract]
Quarterly Cash Dividend (in dollars per share)		$ 0.3425	$ 0.34
Class B [Member]
Cash Dividends [Abstract]
Quarterly Cash Dividend (in dollars per share)		$ 0.3425	$ 0.34
Dividend Declared in Q1 2021 [Member] \| Class A [Member]
Cash Dividends [Abstract]
Date of Declaration by Board of Directors		Jun. 25, 2020
Quarterly Cash Dividend (in dollars per share)		$ 0.3425
Total Dividend	$ 19,200
Dividend Paid Date		Jul. 22, 2020
Shareholders of Record as of Date		Jul. 07, 2020
Dividend Declared in Q1 2021 [Member] \| Class B [Member]
Cash Dividends [Abstract]
Date of Declaration by Board of Directors		Jun. 25, 2020
Quarterly Cash Dividend (in dollars per share)		$ 0.3425
Total Dividend	$ 19,200
Dividend Paid Date		Jul. 22, 2020
Shareholders of Record as of Date		Jul. 07, 2020