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Segment Information, Other Significant Reconciling Items by Segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2022 | Apr. 30, 2021 | Apr. 30, 2020
Segment Information [Abstract] |  |  |
Expenditures for long lived assets | $ (115,858) | $ (103,361) | $ (115,201)
Operating Segments [Member] | Research Publishing & Platforms [Member] |  |  |
Segment Information [Abstract] |  |  |
Expenditures for long lived assets | (30,139) | (24,284) | (16,329)
Operating Segments [Member] | Academic & Professional Learning [Member] |  |  |
Segment Information [Abstract] |  |  |
Expenditures for long lived assets | (44,082) | (41,897) | (38,229)
Operating Segments [Member] | Education Services [Member] |  |  |
Segment Information [Abstract] |  |  |
Expenditures for long lived assets | (7,308) | (3,449) | (613)
Corporate [Member] |  |  |
Segment Information [Abstract] |  |  |
Expenditures for long lived assets | $ (34,329) | $ (33,731) | $ (60,030)

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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123362884&loc=d3e9212-128498 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 30 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123362884&loc=d3e9215-128498 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123385561&loc=d3e9135-128495 + Details
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