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Segment Information (Details)
$ in Thousands
3 Months Ended
Jul. 31, 2023
USD ($)
Segment
Jul. 31, 2022
USD ($)
Segment Reporting [Abstract]    
Number of reportable segments | Segment 3  
Segment Reporting Information [Line Items]    
Revenue, net $ 451,013 $ 487,569
Adjusted contribution to profit 19,379 24,178
Depreciation and amortization 43,728 58,279
Amortization of intangible assets   4,600
Operating Segments    
Segment Reporting Information [Line Items]    
Adjusted contribution to profit 64,237 58,737
Depreciation and amortization 40,201 54,123
Operating Segments | Research    
Segment Reporting Information [Line Items]    
Revenue, net 257,804 274,913
Adjusted contribution to profit 53,527 69,104
Depreciation and amortization 23,212 23,801
Operating Segments | Learning    
Segment Reporting Information [Line Items]    
Revenue, net 109,320 119,647
Adjusted contribution to profit 7,626 3,741
Depreciation and amortization 13,552 14,055
Operating Segments | Held for Sale or Sold    
Segment Reporting Information [Line Items]    
Revenue, net 83,889 93,009
Adjusted contribution to profit 3,084 (14,108)
Depreciation and amortization 3,437 16,267
Corporate, Non-Segment    
Segment Reporting Information [Line Items]    
Adjusted contribution to profit (41,774) (48,667)
Depreciation and amortization $ 3,527 $ 4,156