Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Schedule of computation of basic and diluted earnings per share

The following table summarizes the computation of basic and diluted EPS:

	For the Three Months Ended March 31,
	2023		2022
	(In thousands, except per share data)
Net income attributable to Amkor common stockholders	$	45,351	$	170,663
Weighted-average number of common shares outstanding - basic	245,330		244,403
Effect of dilutive securities:
Share-based awards	1,757		1,597
Weighted-average number of common shares outstanding - diluted	247,087		246,000
Net income attributable to Amkor per common share:
Basic	$	0.18	$	0.70
Diluted	0.18		0.69