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LEASE ARRANGEMENTS (Tables) | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Summary of Right of Use Asset | a. Right-of-use assets
|  | 2019 |
(in US$ thousands) |  | Cost |  |  | Accumulated depreciation |  |  | Net |
Recognition of right-of-use assets upon adoption of ASC 842 at beginning of year (Note 1) |  | $ | 1,056 |  |  | $ | — |  |  | $ | 1,056 |
Recognition of impairment upon adoption of ASC 842 at beginning of year (Note 1) |  |  | (1,056 | ) |  |  | — |  |  |  | (1,056 | )
Balance at end of year |  | $ | — |  |  | $ | — |  |  | $ | — |
Summary of Lease Liabilities | b. Lease liabilities
|  | December 31 |
(in US$ thousands) |  | 2019 |  |  | 2020 |
Carrying amount: |  |  |  |  |  |  |  |
Current portion (classified under other current liabilities) |  | $ | 498 |  |  | $ | 95 |
Noncurrent portion |  |  | 94 |  |  |  | 3 |
|  | $ | 592 |  |  | $ | 98 |
Supplemental Disclosures of Cash Flow Information Related to Leases | Supplemental disclosures of cash flow information consist of the following:
|  | For the Year ended December 31 |
(in US$ thousands) |  | 2019 |  |  | 2020 |
Cash paid for operating leases |  | $ | 510 |  |  | $ | 533 |
Right-of-use assets obtained in exchange for operating lease liabilities |  |  | 1,056 |  |  |  | — |
Reconciliation of Undiscounted Cash Flows to Operating Lease Liabilities | The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the operating lease liabilities recorded on the consolidated balance sheet as of December 31, 2020:
(in US$ thousands) |  |  |  | Operating Leases |
Year |  |  |  |  |  |
2021 |  |  |  | $ | 96 |
2022 |  |  |  |  | 1 |
2023 |  |  |  |  | 1 |
2024 |  |  |  |  | 1 |
2025 |  |  |  |  | — |
Total minimum lease payments |  |  |  |  | 99 |
Less: amount of lease payments representing interest |  |  |  |  | (1 | )
Present value of future minimum lease payments |  |  |  |  | 98 |
Less: current obligation under leases |  |  |  |  | (95 | )
Non-current lease obligations |  |  |  | $ | 3 |
The following table sets forth our future aggregate minimum lease payments required under these operating leases, as of December 31, 2020:
(in US$ thousands) |  | Amount |
2021 |  | $ | 96 |
2022 |  |  | 1 |
2023 |  |  | 1 |
2024 |  |  | 1 |
2025 and after |  |  | — |
|  | $ | 99 |
Schedule of Future Minimum Lease Payments Under Lease Agreements | We have elected the transition option under ASU 2016-02 and continued to apply the prior accounting standard for leases, including the disclosure requirements, in the comparative periods. Future minimum lease p ayments due under those lease agreements as of December 31, 2018, were as follows:
(in US$ thousands) |  | December 31, 2018 |
Not later than 1 year |  | $ | 450 |
Later than 1 year and not later than 5 years |  |  | 504 |
Later than 5 years |  |  | — |
Balance at end of year |  | $ | 954 |

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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121573735&loc=d3e41502-112717 + Details
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