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Fair Value Measurements - Summary of Changes in the Fair Value of Level 3 Contingent Consideration (Detail) - Level 3 [Member] - Contingent Consideration [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |  |
Beginning balance | $ (2,511) | $ (4,196) |
Fair value adjustment of contingent purchase price | (22) | (68) |
Payment of contingent purchase price | 2,680 | 1,769 |
Foreign exchange effect | $ (147) | (16) | $ (28)
Ending balance |  | $ (2,511) | (4,196)
FeedbackNow [Member] |  |  |
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |  |
Acquisition of FeedbackNow |  |  | (3,388)
Fair value adjustment of contingent purchase price |  |  | $ (780)

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- Definition Fair value measurement with unobservable inputs reconciliation recurring basis liability, payment of contingent purchase price. + References No definition available. + Details
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- Definition Fair value measurement with unobservable inputs reconciliations recurring basis liability foreign exchange effect. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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