CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net sales	$ 1,457,922	$ 1,504,868	$ 2,929,461	$ 3,101,684
Cost of sales	1,271,052	1,255,713	2,548,170	2,527,199
Gross profit	186,870	249,155	381,291	574,485
Selling, general and administrative	64,860	68,868	143,531	145,827
Research and development	45,688	37,478	92,735	75,841
Total operating expenses	110,548	106,346	236,266	221,668
Operating income	76,322	142,809	145,025	352,817
Interest expense	14,354	14,593	30,521	28,741
Other (income) expense, net	(11,883)	(8,041)	(15,435)	(13,137)
Total other expense, net	2,471	6,552	15,086	15,604
Income before taxes	73,851	136,257	129,939	337,213
Income tax expense	9,407	10,788	20,271	40,516
Net income	64,444	125,469	109,668	296,697
Net income attributable to non-controlling interests	(158)	(691)	(31)	(1,256)
Net income attributable to Amkor	$ 64,286	$ 124,778	$ 109,637	$ 295,441
Net income attributable to Amkor per common share:
Basic (in dollars per share)	$ 0.26	$ 0.51	$ 0.45	$ 1.21
Diluted (in dollars per share)	$ 0.26	$ 0.51	$ 0.44	$ 1.20
Shares used in computing per common share amounts:
Basic (in shares)	245,637	244,592	245,485	244,498
Diluted (in shares)	246,964	245,855	247,046	245,938