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Capital Stock and Changes in Capital Accounts - Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Sep. 28, 2023 | Jul. 20, 2023 | Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2023 | Oct. 31, 2022
Dividends Payable [Line Items] |  |  |  |  |  |
Total dividend | $ 19,300 | $ 19,400 |  |  | $ 38,691 | $ 38,749
Class A common stock |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Quarterly cash dividend (in dollars per share) | $ 0.3500 | $ 0.3500 | $ 0.3500 | $ 0.3475 | $ 0.3500 | $ 0.3475
Class B common stock |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Quarterly cash dividend (in dollars per share) | $ 0.3500 | $ 0.3500 | $ 0.3500 | $ 0.3475 | $ 0.3500 | $ 0.3475

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
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