Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2022 USD ($) Customer ConsumerandBusinessLeader shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares
Summary Of Significant Accounting Policy [Line Items]
Number of real time feedback votes included in annual surveys | Customer	100
(Decrease) increase in retained earnings	$ 174,631,000	$ 152,825,000
Change in accounting principle, accounting standards update, adopted		true
Operating lease right-of-use assets	49,970,000	$ 65,009,000
Operating lease liabilities	64,383,000
Lease package practical expedients			true
Deferred revenue	178,021,000	213,696,000
Prepaid expenses and other current assets	14,069,000	18,614,000
Deferred commissions	24,559,000	29,631,000
Other assets	$ 8,317,000	9,660,000
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	$ 5,000,000.0	0	3,400,000
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	$ (200,000)	(1,400,000)	(600,000)
Revenue from Contract with Customer, Excluding Assessed Tax	537,787,000	494,315,000	448,984,000
Contract assets	$ 0
Contract with customer, contract duration	1 year
Deferred revenue recognized	$ 189,200,000	154,900,000
Revenue expected to be recognized	416,800,000
Amortization expense related to deferred commissions	45,900,000	43,900,000	40,000,000.0
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	$ 2,300,000	$ 2,100,000	$ 700,000
Stock options granted | shares	0	0	0
Unamortized fair value stock based compensation	$ 24,200,000
Weighted average remaining recognition period	2 years 4 months 24 days
Research Service Revenue [Member] | Customer Concentration Risk [Member] | Major Customer [Member]
Summary Of Significant Accounting Policy [Line Items]
Customer accounted for percentage	4.00%
ASU No. 2016-13 [Member]
Summary Of Significant Accounting Policy [Line Items]
Change in accounting principle, accounting standards update, adopted		true
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2020
ASU No. 2017-04 [Member]
Summary Of Significant Accounting Policy [Line Items]
Change in accounting principle, accounting standards update, adopted		true
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2020
Change in accounting principle, accounting standards update, immaterial effect		true
ASU NO. 2018- 13 [Member]
Summary Of Significant Accounting Policy [Line Items]
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2020
ASU No. 2018-15 [Member]
Summary Of Significant Accounting Policy [Line Items]
Change in accounting principle, accounting standards update, adopted		true
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2020
Change in accounting principle, accounting standards update, immaterial effect			true
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. 2018-02 [Member]
Summary Of Significant Accounting Policy [Line Items]
Change in accounting principle, accounting standards update, adopted		true
ASU No. 2014-09 [Member]
Summary Of Significant Accounting Policy [Line Items]
Change in accounting principle, accounting standards update, adopted		true
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU No. 2016-13 [Member]
Summary Of Significant Accounting Policy [Line Items]
(Decrease) increase in retained earnings	$ (200,000)
Minimum [Member]
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		14 days
Advisory services period			1 hour
Maximum [Member]
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