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Segment Information - Other Significant Reconciling Items by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenditures for long lived assets	$ (104,113)	$ (115,858)	$ (103,361)
Operating Segments | Research
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenditures for long lived assets	(29,424)	(30,139)	(24,284)
Operating Segments | Academic
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenditures for long lived assets	(39,069)	(43,580)	(36,831)
Operating Segments | Talent
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenditures for long lived assets	(5,865)	(7,810)	(8,515)
Corporate Expenses
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenditures for long lived assets	$ (29,755)	$ (34,329)	$ (33,731)

X

- 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/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480060/805-50-25-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 30
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480027/805-50-30-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 30
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480027/805-50-30-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Subparagraph (c)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-13

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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