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DEFERRED REVENUE (Tables) | 12 Months Ended
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Dec. 31, 2020
Deferred Revenue [Abstract] |
Summary of Deferred Revenue | Deferred revenue consists of the following:
|  | December 31 |
(in US$ thousands) |  | 2019 |  |  | 2020 |
Unused virtual points |  | $ | 999 |  |  | $ | 724 |
Unamortized virtual items |  |  | 366 |  |  |  | 226 |
|  | $ | 1,365 |  |  | $ | 950 |

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- Definition Tabular disclosure of the type of arrangements and the corresponding amounts that comprise the current and noncurrent balance of deferred revenue as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121566466&loc=d3e6935-107765 + Details
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