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PENSION BENEFITS (Tables) | 12 Months Ended
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Dec. 31, 2023
Retirement Benefits [Abstract] |
Benefit Obligations, Fair Value of Plan Assets, and Funded Status | The following table sets forth the plan’s benefit obligations, fair value of plan assets, and funded status at December 31, 2023 and 2022:
|  | December 31 |
(in US$ thousands) |  | 2023 |  |  | 2022 |
Benefit obligation |  | $ | 339 |  |  | $ | 321 |
Fair value of plan assets |  |  | 473 |  |  |  | 463 |
|  | $ | (134 | ) |  | $ | (142 | )
Amounts recognized in the balance sheet consist of: |  |  |  |  |  |
Noncurrent liabilities (assets) |  | $ | (134 | ) |  | $ | (142 | )
Accumulated other comprehensive income |  |  | — |  |  |  | — |
Net amount recognized |  | $ | (134 | ) |  | $ | (142 | )
Amounts recognized in accumulated comprehensive income (loss) consist of: |  |  |  |  |  |
Unrecognized net gain (loss) |  | $ | (15 | ) |  | $ | (4 | )
Pension Cost | For the years ended December 31, 2023, 2022 and 2021, the net period pension cost consisted of the following:
|  | December 31 |
(in US$ thousands) |  | 2023 |  |  | 2022 |  |  | 2021 |
Service cost |  | $ | — |  |  | $ | — |  |  | $ | — |
Interest cost |  |  | 6 |  |  |  | 2 |  |  |  | 3 |
Expected return on plan assets |  |  | (8 | ) |  |  | (3 | ) |  |  | (3 | )
Amortization of net loss |  |  | — |  |  |  | 2 |  |  |  | 3 |
Curtailment gain |  |  | — |  |  |  | — |  |  |  | — |
|  | $ | (2 | ) |  | $ | 1 |  |  | $ | 3 |
Weighted Average Assumptions Used to Determine Benefit Obligations | Weighted average assumptions used to determine benefit obligations for 2023 and 2022 were as follows:
|  | December 31 |
|  | 2023 |  |  | 2022 |
Discount rate |  |  | 1.625 | % |  |  | 1.750 | %
Rate of compensation increase |  |  | 2.00 | % |  |  | 2.00 | %
Schedule of Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost | Weighted average assumptions used to determine net periodic benefit cost for end of fiscal year were as follows:
|  | 2023 |  |  | 2022 |
Discount rate |  |  | 1.750 | % |  |  | 0.750 | %
Rate of return on plan assets |  |  | 1.750 | % |  |  | 0.750 | %
Rate of compensation increase |  |  | 2.00 | % |  |  | 2.00 | %

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-3 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-4 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-2 + Details
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