Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2024

Summary of the Company's Assets and Liabilities that are Measured at Fair Value on a Recurring Basis

The tables below set forth, by level, the Company’s assets and liabilities that are measured at fair value on a recurring basis. The tables do not include assets and liabilities that are measured at historical cost or any basis other than fair value:


	Fair Value Measurements at December 31, 2024
	Level 1		Level 2		Level 3		Total
Items measured at fair value on a recurring basis:
Assets
Long-term investments:
Marketable equity investments	$	10,826		—		—	$	10,826


	Fair Value Measurements at December 31, 2023
	Level 1		Level 2		Level 3		Total
Items measured at fair value on a recurring basis:
Assets
Long-term investments:
Marketable equity investments	$	10,616		—		—	$	10,616

Components of Accumulated Other Comprehensive Income (Loss)

The following table presents the components of accumulated other comprehensive income (loss) as of December 31, 2022, 2023 and 2024:


	Year Ended December 31, 2022								Year Ended December 31, 2023									Year Ended December 31, 2024
	US$								US$									US$
	Foreign currency items		Defined benefit pension plans			Accumulated other comprehensive income (loss)			Foreign currency items			Defined benefit pension plans			Accumulated other comprehensive income (loss)			Foreign currency items			Defined benefit pension plans			Accumulated other comprehensive income (loss)
Beginning balance		178		(718	)		(540	)		3,917			(1,322	)		2,595			2,223			(1,070	)		1,153
Current-period change		3,739		(604	)		3,135			(1,694	)		252			(1,442	)		(815	)		—			(815	)

Ending balance		3,917		(1,322	)		2,595			2,223			(1,070	)		1,153			1,408			(1,070	)		338