Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2023 USD ($) ConsumerandBusinessLeader Customer shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020
Summary Of Significant Accounting Policy [Line Items]
Number of real time feedback votes included in annual surveys | Customer	100
Change in accounting principle, accounting standards update, adopted	true
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
Business combination amount	$ 0	$ 0	$ 0
Goodwill impairment charges	0	0	0
Long-lived asset impairment charges	$ 2,600,000	5,000,000	0
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]	Property And Equipment Write Offs And Impairments
Foreign exchange losses	$ (300,000)	(200,000)	(1,400,000)
Revenue from Contract with Customer, Excluding Assessed Tax	$ 480,779,000	537,787,000	494,315,000
Specified license period	12 or 24 months
Contract assets	$ 0
Deferred revenue recognized	166,300,000	189,200,000
Revenue expected to be recognized	385,600,000
Amortization expense related to deferred commissions	39,800,000	45,900,000	43,900,000
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	$ 1,700,000	$ 2,300,000	$ 2,100,000
Stock options granted | shares	144,000	0	0
Unamortized fair value stock based compensation	$ 27,700,000
Weighted average remaining recognition period	2 years 6 months
Research Service Revenue [Member] | Customer Concentration Risk [Member] | Major Customer [Member]
Summary Of Significant Accounting Policy [Line Items]
Customer accounted for percentage	4.00%
Topic 842 [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. 2019-12 [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