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Divestitures - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Nov. 15, 2023
Sep. 18, 2023
Apr. 30, 2024
Apr. 30, 2023
Apr. 30, 2022
Oct. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Increase (decrease) in earnings from operations of discontinued operations     $ 255 $ 554 $ 1,624  
Retained deficit     26,930 23,479    
Other current liabilities     5,012 3,733    
Accounts receivable     (28,043) (24,653)    
Gain on the sale of business     1,438 0 0  
Revision of Prior Period, Error Correction, Adjustment            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Increase (decrease) in earnings from operations of discontinued operations       $ (111) 23  
Revision of Prior Period, Error Correction, Adjustment | First Error            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Retained deficit         1,000  
Other current liabilities         1,000  
Revision of Prior Period, Error Correction, Adjustment | Second Error            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Retained deficit         752  
Accounts receivable         $ 752  
Discontinued Operations, Disposed of by Sale | The Poven Method            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Equity ownership, percentage   100.00%        
Proceeds from sale of equity method investments   $ 2,100        
Escrow deposit           $ 300
Equal increments for release of escrow deposit not subject to then outstanding indemnification claims           $ 100
Disposal Group, Not Discontinued Operations | Transportation Rating Solutions            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Cash consideration $ 1,100          
Consideration subject to holdback provisions $ 440          
Consideration subject to holdback provisions period (in days) 120 days          
Gain on the sale of business     $ 1,400