Equity and Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Changes in equity attributable to both Company and noncontrolling interests

Changes in equity consist of the following:

	Attributable to Amkor			Attributable to Non-controlling Interests			Total
	(In thousands)
Equity at December 31, 2016	$	1,383,588		$	19,816		$	1,403,404
Net income	105,501			1,814			107,315
Other comprehensive income (loss)	13,001			—			13,001
Issuance of stock through employee share-based compensation plans	2,365			—			2,365
Treasury stock acquired through surrender of shares for tax withholding	(1,378		)	—			(1,378		)
Share-based compensation	2,516			—			2,516
Subsidiary dividends paid to non-controlling interests	—			(270		)	(270		)
Equity at June 30, 2017	$	1,505,594		$	21,360		$	1,526,954

	Attributable to Amkor			Attributable to Non-controlling Interests			Total
	(In thousands)
Equity at December 31, 2015	$	1,200,286		$	17,250		$	1,217,536
Net income	3,838			1,123			4,961
Other comprehensive income (loss)	46,325			—			46,325
Issuance of stock through employee share-based compensation plans	60			—			60
Treasury stock acquired through surrender of shares for tax withholding	(238		)	—			(238		)
Share-based compensation	1,626			—			1,626
Subsidiary dividends paid to non-controlling interests	—			(270		)	(270		)
Equity at June 30, 2016	$	1,251,897		$	18,103		$	1,270,000

Changes in accumulated other comprehensive income (loss)

Changes in accumulated other comprehensive income (loss), net of tax, consist of the following:

	Defined Benefit Pension		Foreign Currency Translation		Total
	(In thousands)
Accumulated other comprehensive income (loss) at December 31, 2016	$	1,138	$	5,124	$	6,262
Other comprehensive income (loss) before reclassifications	—		12,753		12,753
Amounts reclassified from accumulated other comprehensive income (loss)	248		—		248
Other comprehensive income (loss)	248		12,753		13,001
Accumulated other comprehensive income (loss) at June 30, 2017	$	1,386	$	17,877	$	19,263

	Defined Benefit Pension			Foreign Currency Translation			Total
	(In thousands)
Accumulated other comprehensive income (loss) at December 31, 2015	$	(1,425	)	$	(659	)	$	(2,084	)
Other comprehensive income (loss) before reclassifications	—			46,278			46,278
Amounts reclassified from accumulated other comprehensive income (loss)	47			—			47
Other comprehensive income (loss)	47			46,278			46,325
Accumulated other comprehensive income (loss) at June 30, 2016	$	(1,378	)	$	45,619		$	44,241