Equity and Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2013

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, 2012	$	657,955		$	8,839	$	666,794
Net income	68,458			1,641		70,099
Other comprehensive loss	(4,401		)	—		(4,401		)
Treasury stock acquired through surrender of shares for tax withholding	(234		)	—		(234		)
Share-based compensation expense	2,065			—		2,065
Exchange of debt for common stock	195,034			—		195,034
Equity at September 30, 2013	$	918,877		$	10,480	$	929,357

	Attributable to Amkor			Attributable to Noncontrolling Interests		Total
	(In thousands)
Equity at December 31, 2011	$	693,266		$	7,955	$	701,221
Net income	34,672			358		35,030
Other comprehensive income	1,706			—		1,706
Issuance of stock through employee share-based compensation plans	181			—		181
Treasury stock acquired through surrender of shares for tax withholding	(546		)	—		(546		)
Share-based compensation expense	2,048			—		2,048
Repurchase of common stock	(79,814		)	—		(79,814		)
Equity at September 30, 2012	$	651,513		$	8,313	$	659,826

Schedule of Accumulated Other Comprehensive Income

The following table reflects the changes in accumulated other comprehensive income, net of tax:

	Defined Benefit Pension			Foreign Currency			Total
	(In thousands)
Accumulated other comprehensive (loss) income at December 31, 2012	$	(5,373	)	$	16,614		$	11,241
Other comprehensive income (loss) before reclassifications	4,120			(8,812		)	(4,692		)
Amounts reclassified from accumulated other comprehensive (loss) income	291			—			291
Other comprehensive income (loss)	4,411			(8,812		)	(4,401		)
Accumulated other comprehensive (loss) income at September 30, 2013	$	(962	)	$	7,802		$	6,840

	Defined Benefit Pension			Foreign Currency		Total
	(In thousands)
Accumulated other comprehensive (loss) income at December 31, 2011	$	(10,510	)	$	21,359	$	10,849
Other comprehensive income before reclassifications	1,294			104		1,398
Amounts reclassified from accumulated other comprehensive (loss) income	308			—		308
Other comprehensive income	1,602			104		1,706
Accumulated other comprehensive (loss) income at September 30, 2012	$	(8,908	)	$	21,463	$	12,555