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Details of Significant Accounts - Pensions, schedule of principal actuarial assumptions (Details) - Perfect Mobile Corp. (Taiwan) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate	1.50%	1.50%
Future salary increases	3.00%	3.00%
Discount rate
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Percentage of increase in actuarial assumption	(5.00%)	(5.00%)
Percentage of decrease in actuarial assumption	6.00%	5.00%
Future salary increases
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Effect on present value of defined benefit obligation	$ 5	$ 5
Effect on present value of defined benefit obligation	$ (5)	$ (5)

X

- Definition

The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]]

+ References

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- Definition

The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]]

+ References

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- Definition

The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]]

+ References

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- Definition

The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]]

+ References

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The reasonably possible percentage of the decrease in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [member]]

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The reasonably possible percentage of the increase in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [member]]

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