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Gain on Sale of Software Products - Additional Information (Detail) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2020
Income Statement Balance Sheet and Additional Disclosures by Disposal Groups Including Discontinued Operations [Line Items] |  |
Gain on sale of software products |  | $ 711
Asset Purchase Agreement [Member] | Moho and Motion Artist Animation Software Product [Member] | Lost Marble LLC [Member] |  |
Income Statement Balance Sheet and Additional Disclosures by Disposal Groups Including Discontinued Operations [Line Items] |  |
Gain on sale of software products | $ 700 |

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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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