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Restructuring Charges - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Restructuring Charges [Line Items]      
Restructuring additions $ 9,913 $ 11,550 $ 9,909
Loss on disposal 4,309 0 0
Restructuring charge liability 1,197 1,901 4,319
Studer Education      
Restructuring Charges [Line Items]      
Restructuring additions 1,300    
Loss on disposal 3,600    
Employee Severance [Member]      
Restructuring Charges [Line Items]      
Restructuring additions 3,300 3,000 5,700
Restructuring charge liability 629 1,366 3,751
Employee Severance [Member] | Contract Termination      
Restructuring Charges [Line Items]      
Restructuring additions 2,300    
Employee Severance [Member] | Studer Education      
Restructuring Charges [Line Items]      
Restructuring additions 1,000    
Office Space Reductions [Member]      
Restructuring Charges [Line Items]      
Restructuring additions 6,200 8,100 2,500
Office Space Reductions [Member] | Q1 2023 Hillsboro Office Exit Member      
Restructuring Charges [Line Items]      
Restructuring additions   1,900  
Office Space Reductions [Member] | Q3 2023 Lexington Office Exit      
Restructuring Charges [Line Items]      
Restructuring additions   3,500  
Office Space Reductions [Member] | Office Space Reductions that were Initiated in Prior Periods      
Restructuring Charges [Line Items]      
Restructuring additions 2,300 1,800 2,300
Office Space Reductions [Member] | Additional Impairment on Previously Vacated Office Spaces      
Restructuring Charges [Line Items]      
Restructuring additions 800 900 200
Office Space Reductions [Member] | 200 S. Michigan Ave Office Exit      
Restructuring Charges [Line Items]      
Restructuring additions 1,400    
Office Space Reductions [Member] | New York, NY Office Exit      
Restructuring Charges [Line Items]      
Restructuring additions 1,200    
Office Space Reductions [Member] | Abandoned fixed assets accelerated amortization      
Restructuring Charges [Line Items]      
Restructuring additions 500    
Other Restructuring [Member]      
Restructuring Charges [Line Items]      
Restructuring additions 500   1,700
Restructuring charge liability 568 535 568
Other Restructuring [Member] | Contract Termination      
Restructuring Charges [Line Items]      
Restructuring additions     600
Other Restructuring [Member] | Studer Education      
Restructuring Charges [Line Items]      
Restructuring additions 300    
Other Restructuring [Member] | Abandoned Capitalized Software Development Project      
Restructuring Charges [Line Items]      
Restructuring additions     300
Other Restructuring [Member] | San Francisco Office [Member]      
Restructuring Charges [Line Items]      
Restructuring additions     700
Education [Member]      
Restructuring Charges [Line Items]      
Restructuring additions 400 100 3,900
Corporate Segment      
Restructuring Charges [Line Items]      
Restructuring additions 7,600 8,200 3,700
Commercial      
Restructuring Charges [Line Items]      
Restructuring additions 600 2,000 1,600
Commercial | Other Restructuring [Member] | hurn_Life Sciences Divestiture Gain/Loss | Life Sciences      
Restructuring Charges [Line Items]      
Restructuring additions     100
Healthcare      
Restructuring Charges [Line Items]      
Restructuring additions $ 1,300 $ 1,300 $ 700