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v3.19.1

Acquisitions - Additional Information (Detail) |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 03, 2019 USD ($) Employee | Jul. 06, 2018 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Business Acquisition [Line Items] |  |  |  |  |
Additional purchase price paid |  |  | $ 766,000 |  |
Acquisitions, net of cash acquired |  |  | 238,943,000 |  |
Increase (decrease) in goodwill |  |  | 157,400,000 |  |
Decrease in goodwill due to foreign currency fluctuations |  |  | 400,000 |  |
SiriusDecisions, Inc [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Revenue |  |  | 15,200,000 |  |
Direct expenses including intangible amortization |  |  | 24,900,000 |  |
FeedbackNow [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Acquisition date |  | Jul. 06, 2018 |  |  |
Percentage of issued and outstanding shares acquired |  | 100.00% |  |  |
Purchase price paid |  | $ 8,400,000 |  |  |
Acquisition price due and subject to indemnity provisions from seller |  | 1,500,000 |  |  |
Additional purchase price paid |  |  | 800,000 |  |
Maximum consideration payable based on the financial performance of acquired company |  | 4,200,000 |  |  |
Business acquisition undiscounted amounts could be payable, minimum |  | 0 |  |  |
Contingent purchase price |  | $ 3,400,000 |  |  |
FeedbackNow [Member] | Scenario, Forecast [Member] | Maximum [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Additional consideration payable to sellers based on financial performance |  |  |  | $ 2,500,000 | $ 1,700,000
SiriusDecisions, Inc [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Percentage of issued and outstanding shares acquired | 100.00% |  |  |  |
Purchase price paid | $ 245,000,000 |  |  |  |
Number of employees | Employee | 350 |  |  |  |
Consideration paid at closing | $ 247,300,000 |  |  |  |
Cash acquired | 7,900,000 |  |  |  |
Adjustment for transaction-related expenses | 500,000 |  |  |  |
Acquisitions, net of cash acquired | $ 238,900,000 |  |  |  |
Increase in goodwill due to acquisition |  |  | 157,800,000 |  |
Acquisition costs recognized |  |  | $ 1,700,000 |  |

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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + Details
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