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Summary of Significant Accounting Policies - Additional Information (Detail) | 12 Months Ended
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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 |  |

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