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Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2024

Property, Plant and Equipment

Schedule of property, plant and equipment

(a)


															Prepayments
															for purchase
									Research		Office				of equipment
					Building				and		furniture				and
					and				development		and				construction
		Land			improvements		Machinery		equipment		equipment		Others		in progress		Total

		(in thousands)
Cost
Balance at January 1, 2023		$	41,828		76,475		80,504		49,424		14,005		47,713		2,210		312,159
Additions			—		1,239		14,977		2,415		1,010		5,911		2,621		28,173
Consolidation through obtaining control of subsidiary			—		—		—		—		6		—		—		6
Transfers			—		67		334		2		—		—		(403)		—
Reclassification to assets held for sale			(4,175)		—		—		—		—		—		—		(4,175)
Disposals			—		—		(1,084)		(1,608)		(1)		(2,770)		—		(5,463)
Effect of exchange rate changes			—		1		1		-		(29)		(82)		—		(109)
Balance at December 31, 2023			37,653		77,782		94,732		50,233		14,991		50,772		4,428		330,591
Additions			—		651		2,210		5,998		739		4,844		2,028		16,470
Transfers			—		1,610		656		28		—		453		(2,870)		(123)
Disposals			—		(15)		(1,034)		(185)		(195)		(13,596)		—		(15,025)
Effect of exchange rate changes			—		—		—		(7)		(51)		(157)		—		(215)
Balance at December 31, 2024		$	37,653		80,028		96,564		56,067		15,484		42,316		3,586		331,698

Accumulated Depreciation
Balance at January 1, 2023		$	—		32,975		68,357		42,205		11,641		30,843		—		186,021
Depreciation for the year			—		4,325		4,985		3,241		1,054		6,323		—		19,928
Disposals			—		—		(1,081)		(1,596)		(1)		(2,711)		—		(5,389)
Effect of exchange rate changes			—		—		—		—		(25)		(53)		—		(78)
Balance at December 31, 2023			—		37,300		72,261		43,850		12,669		34,402		—		200,482
Depreciation for the year			—		4,394		6,863		3,823		1,018		5,923		—		22,021
Disposals			—		(15)		(1,034)		(185)		(195)		(10,504)		—		(11,933)
Effect of exchange rate changes			—		(1)		—		(6)		(43)		(102)		—		(152)
Balance at December 31, 2024		$	—		41,678		78,090		47,482		13,449		29,719		—		210,418

Carrying amounts
At December 31, 2023		$	37,653		40,482		22,471		6,383		2,322		16,370		4,428		130,109
At December 31, 2024		$	37,653		38,350		18,474		8,585		2,035		12,597		3,586		121,280

Schedule of estimated useful lives of property plant and equipment


Buildings		25 years
Building improvements		4-16 years
Machinery		4-10 years
Research and development equipment		2-6 years
Office furniture and equipment		3-8 years
Others		2-15 years

Schedule of lease liabilities


		December 31,			December 31,
		2023			2024

		(in thousands)
Current portion (classified under other current liabilities)		$	4,636		3,708
Non-current portion (classified under other non-current liabilities)			6,744		3,452
		$	11,380		7,160

Schedule of additional lease information


		Year ended December 31,
		2022			2023		2024

		(in thousands)
Expenses relating to short-term leases		$	364		73		65
Expenses relating to low-value asset leases		$	113		368		246
Expenses relating to variable lease payments not included in the measurement of lease liabilities		$	2,920		2,195		2,739

Schedule of reconciliation of lease liabilities to cash flows arising from financing activities


		Year ended December 31,
		2023			2024

		(in thousands)
Balance at beginning of year		$	11,675		11,380
Change from financing activities:
Payment of lease liabilities			(4,830)		(5,032)
Total change from financing activities			(4,830)		(5,032)
Other changes:
New lease			4,267		1,758
Interest expense			167		216
Interest paid			(167)		(216)
Lease modifications			(75)		(1,624)
Effect of exchange rate changes			343		678
Total liability-related other changes			4,535		812
Balance at end of year		$	11,380		7,160