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ACCOUNTS RECEIVABLE - NET (Tables) | 12 Months Ended
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Dec. 31, 2022
Receivables [Abstract] |
Accounts Receivable Net | Accounts receivable consist of the following:
|  | December 31 |
(in US$ thousands) |  | 2022 |  |  | 2021 |
Accounts receivable |  | $ | 200 |  |  | $ | 267 |
Less: Allowance for doubtful accounts |  |  | (1 | ) |  |  | (2 | )
|  | $ | 199 |  |  | $ | 265 |
Summary of Changes in Allowance for Doubtful Accounts | The following is a summary of the changes in our Company’s allowance for doubtful accounts during the years ended December 31, 2022, 2021 and 2020:
(in US$ thousands) |  | 2022 |  |  | 2021 |  |  | 2020 |
Balance at beginning of year |  | $ | 2 |  |  | $ | 1 |  |  | $ | 3 |
Additions: Bad debt expense |  |  | 2 |  |  |  | 7 |  |  |  | 5 |
Less: Write-off |  |  | (3 | ) |  |  | (6 | ) |  |  | (7 | )
Translation adjustment |  |  | — |  |  |  | — |  |  |  | — |
Balance at end of year |  | $ | 1 |  |  | $ | 2 |  |  | $ | 1 |

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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