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Acquisitions - Summary of Unaudited Proforma Results of Operation (Detail) - Avast PLC Family Safety Mobile Software Business [Member] - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Business Acquisition [Line Items] |  |
Revenues | $ 67,654 | $ 87,908
Net (loss) income | $ (16,304) | $ 4,046
Earnings per share: |  |
Basic | $ (0.30) | $ 0.08
Diluted | $ (0.30) | $ 0.08

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