Equity and Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2012

Equity [Abstract]

Changes in equity and comprehensive income attributable to both Company and noncontrolling interests

The following table reflects the changes in equity attributable to both Amkor and the noncontrolling interests:

	Attributable to Amkor			Attributable to Noncontrolling Interests			Total
	(In thousands)
Equity at December 31, 2011	$	693,266		$	7,955		$	701,221
Net income	11,774			(192		)	11,582
Other comprehensive loss	(1,422		)	—			(1,422		)
Treasury stock acquired through surrender of shares for tax withholding	(353		)	—			(353		)
Issuance of stock through employee share-based compensation plans	69			—			69
Share-based compensation expense	802			—			802
Repurchase of common stock	(4,505		)	—			(4,505		)
Equity at March 31, 2012	$	699,631		$	7,763		$	707,394

	Attributable to Amkor			Attributable to Noncontrolling Interests		Total
	(In thousands)
Equity at December 31, 2010	$	630,013		$	6,668	$	636,681
Net income	25,103			663		25,766
Other comprehensive loss	(464		)	—		(464		)
Treasury stock acquired through surrender of shares for tax withholding	(696		)	—		(696		)
Issuance of stock through employee share-based compensation plans	627			—		627
Share-based compensation expense	2,021			—		2,021
Conversion of debt to common stock	100,497			—		100,497
Equity at March 31, 2011	$	757,101		$	7,331	$	764,432