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Pension Plan (Tables)

12 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

Changes in Benefits Obligation and Plan Assets and Reconciliation of Funded Status

The changes in benefits obligation and plan assets and the reconciliation of funded status are as follows:

		December 31
		2019				2020				2021
		US$				US$				US$
Change in benefit obligation
Projected benefit obligation at beginning of year			5,838				1,754				1,716
Service cost			275				5				35
Interest cost			91				5				20
Actuarial loss (gain)			72				(8	)			142
Benefits paid			(450	)			(40	)			(110	)
Disposal of subsidiary			(4,072	)			—				—
Projected benefit obligation at end of year			1,754				1,716				1,803
Change in plan assets
Fair value of plan assets at beginning of year			5,410				1,487				1,551
Actual return on plan assets			98				49				48
Employer contributions			85				49				70
Benefits paid			(448	)			(34	)			(30	)
Disposal of subsidiary			(3,658	)			—				—
Fair value of plan assets at end of year			1,487				1,551				1,639
Funded status recognized as an other liabilities			(267	)			(165	)			(164	)

Amounts Recognized in Accumulated Other Comprehensive Income

Amounts recognized in accumulated other comprehensive income consist of the following:

		Year Ended December 31
		2019				2020				2021
		US$				US$				US$
Net loss			693				754				718
Total recognized in accumulated other comprehensive income			693				754				718

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost are as follows:

		Year Ended December 31
		2019				2020				2021
		US$				US$				US$
Service cost			275				5				35
Interest cost			91				5				20
Projected return on plan assets			(77	)			(29	)			(33	)
Amortization of unrecognized net transition obligation and unrecognized net actuarial gain			48				37				34
Net periodic benefit cost			337				18				56

Other Changes in Plan Assets and Benefit Obligation Recognized in Other Comprehensive Loss

Other changes in plan assets and benefit obligation recognized in other comprehensive loss:

		2019				2020				2021
		US$				US$				US$
Recognized decrease in net gain (loss)			15				61				(36	)
Total recognized in other comprehensive loss (income)			15				61				(36	)

Expected Benefit Payments

Expected benefit payments:

		US$
2022			22
2023			16
2024			64
2025			54
2026			96
2027 and thereafter			267

Actuarial Assumptions to Determine Benefit Obligations

The actuarial assumptions to determine the benefit obligations are as follows:

		2019				2020				2021
Weighted-average assumptions used to determine benefit obligations:
Discount rate			1.00	%			0.50	%			0.75	%
Rate of compensation increase			4.00	%			4.00	%			4.00	%
Weighted-average assumptions used to determine net projected benefit cost:
Discount rate			1.00	%			0.50	%			0.75	%
Expected long-term return on plan assets			2.00	%			2.00	%			2.00	%
Rate of compensation increase			4.00	%			4.00	%			4.00	%

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Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate.

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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.

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Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter.

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