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Summary of Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2024
USD ($)
Customer
ConsumerandBusinessLeader
shares
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
shares
Summary Of Significant Accounting Policy [Line Items]      
Lease package practical expedients true    
Original maturities 90 days    
Number of customers accounted for revenues or accounts receivable greater than 3% or 3% of total | Customer 0    
Annual goodwill impairment test, period November 30th    
Goodwill impairment charges $ 0 $ 0 $ 0
Long-lived asset impairment charges $ 4,600,000 2,600,000 5,000,000
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration] Impairment of Leasehold    
Foreign exchange losses $ (800,000) (300,000) (200,000)
Revenue from Contract with Customer, Excluding Assessed Tax $ 432,470,000 480,779,000 537,787,000
Specified license period 12 or 24 months    
Contract assets $ 0    
Deferred revenue recognized 141,800,000 166,300,000  
Revenue expected to be recognized 371,000,000    
Amortization expense related to deferred commissions 37,200,000 39,800,000 45,900,000
Impairment of deferred commissions $ 0 0 0
Option to extend description Some of the Company’s leases include options to extend or terminate the lease. When determining the lease term, these options are included in the measurement and recognition of the Company’s ROU assets and lease liabilities when it is reasonably certain that the Company will exercise the option(s).    
Advertising expense $ 900,000 $ 1,700,000 $ 2,300,000
Stock options granted | shares 0   0
Unamortized fair value stock based compensation $ 26,700,000    
Weighted average remaining recognition period 2 years 8 months 12 days    
Research Service Revenue [Member] | Customer Concentration Risk [Member] | Major Customer [Member]      
Summary Of Significant Accounting Policy [Line Items]      
Customer accounted for percentage 3.00%    
ASU No. 2020-04 [Member]      
Summary Of Significant Accounting Policy [Line Items]      
Change in accounting principle, accounting standards update, adopted true    
ASU No. 2022-06 [Member]      
Summary Of Significant Accounting Policy [Line Items]      
Change in accounting principle, accounting standards update, adopted true    
Change in accounting principle, accounting standards update, immaterial effect true    
ASU No. 2023-07 [Member]      
Summary Of Significant Accounting Policy [Line Items]      
Change in accounting principle, accounting standards update, adopted true    
Change in accounting principle, accounting standards update, immaterial effect true    
Minimum      
Summary Of Significant Accounting Policy [Line Items]      
Number of consumers and business leaders and technology leaders included in annual surveys | ConsumerandBusinessLeader 700,000    
Consulting services period 14 days    
Advisory services period 1 hour    
Maximum      
Summary Of Significant Accounting Policy [Line Items]      
Consulting services period 3 months    
Advisory services period 2 days    
Contract with customer, expected payment term one year