CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 133,451	$ 306,457	$ 243,119	$ 603,154
Other comprehensive income (loss), net of tax:
Adjustments to net unrealized gains (losses) on available-for-sale debt investments	124	(332)	216	(2,039)
Adjustments to unrealized components of defined benefit pension plans	(97)	5	(292)	14
Foreign currency translation	380	(7,509)	(14,784)	(31,536)
Total other comprehensive income (loss)	407	(7,836)	(14,860)	(33,561)
Comprehensive income	133,858	298,621	228,259	569,593
Comprehensive income attributable to non-controlling interests	(837)	(376)	(868)	(1,632)
Comprehensive income attributable to Amkor	$ 133,021	$ 298,245	$ 227,391	$ 567,961