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

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Changes in equity

Changes in equity consist of the following:

	Attributable to Amkor			Attributable to Non-controlling Interests			Total
	(In thousands)
Equity at December 31, 2017	$	1,696,276		$	23,433		$	1,719,709
Net income (loss)	9,544			651			10,195
Other comprehensive income (loss)	15,052			—			15,052
Issuance of stock through employee share-based compensation plans	1,022			—			1,022
Treasury stock acquired through surrender of shares for tax withholding	(56		)	—			(56		)
Share-based compensation	1,287			—			1,287
Subsidiary dividends paid to non-controlling interests	—			(135		)	(135		)
Equity at March 31, 2018	$	1,723,125		$	23,949		$	1,747,074

	Attributable to Amkor			Attributable to Non-controlling Interests			Total
	(In thousands)
Equity at December 31, 2016	$	1,409,692		$	19,825		$	1,429,517
Net income (loss)	(14,786		)	818			(13,968		)
Other comprehensive income (loss)	13,816			—			13,816
Issuance of stock through employee share-based compensation plans	145			—			145
Treasury stock acquired through surrender of shares for tax withholding	(210		)	—			(210		)
Share-based compensation	1,053			—			1,053
Subsidiary dividends paid to non-controlling interests	—			(135		)	(135		)
Equity at March 31, 2017	$	1,409,710		$	20,508		$	1,430,218

Changes in accumulated other comprehensive income (loss), net of tax

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, 2017	$	6,303		$	16,216	$	22,519
Other comprehensive income (loss) before reclassifications	—			15,091		15,091
Amounts reclassified from accumulated other comprehensive income (loss)	(39		)	—		(39		)
Other comprehensive income (loss)	(39		)	15,091		15,052
Accumulated other comprehensive income (loss) at March 31, 2018	$	6,264		$	31,307	$	37,571

	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	—		13,586		13,586
Amounts reclassified from accumulated other comprehensive income (loss)	230		—		230
Other comprehensive income (loss)	230		13,586		13,816
Accumulated other comprehensive income (loss) at March 31, 2017	$	1,368	$	18,710	$	20,078