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v3.22.1

Summary of Deferred Revenue (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | $ 880 | $ 950
Unused Virtual Point |  |
Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | 702 | 724
Unamortized Virtual Items |  |
Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | 168 | $ 226
Advances For Pre-Order Items |  |
Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | $ 10 |

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- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(5)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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