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CASH, CASH EQUIVALENTS AND RESTRICTED CASH (Tables) | 12 Months Ended
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Dec. 31, 2021
Cash And Cash Equivalents [Abstract] |
Cash, Cash Equivalents and Restricted Cash | The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows as of December 31, 2020 and 2021.
|  | December 31 |
(in US$ thousands) |  | 2020 |  |  | 2021 |
Cash and savings accounts |  | $ | 45,696 |  |  | $ | 41,455 |
Time deposits |  |  | 6 |  |  |  | — |
Cash and cash equivalents reported on the consolidated balance sheets |  |  | 45,702 |  |  |  | 41,455 |
Cash restricted as performance bond |  |  | 300 |  |  |  | 306 |
Total cash, cash equivalents and restricted cash reported on the consolidated statements of cash flows |  | $ | 46,002 |  |  | $ | 41,761 |
We maintain cash and cash equivalents, as well as restricted cash, in bank accounts with major financial institutions with high credit ratings located in the following jurisdictions:
|  | December 31 |
(in US$ thousands) |  | 2020 |  |  | 2021 |
Taiwan |  | $ | 42,040 |  |  | $ | 41,182 |
Hong Kong |  |  | 3,946 |  |  |  | 564 |
China |  |  | 16 |  |  |  | 15 |
|  | $ | 46,002 |  |  | $ | 41,761 |

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