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

6 Months Ended

Jun. 30, 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	42,135			1,244			43,379
Other comprehensive income (loss)	3,866			—			3,866
Issuance of stock through employee share-based compensation plans	1,023			—			1,023
Treasury stock acquired through surrender of shares for tax withholding	(105		)	—			(105		)
Share-based compensation	2,556			—			2,556
Subsidiary dividends paid to non-controlling interests	—			(270		)	(270		)
Equity at June 30, 2018	$	1,745,751		$	24,407		$	1,770,158

	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	104,227			1,835			106,062
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	$	1,530,423		$	21,390		$	1,551,813

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	—			3,947		3,947
Amounts reclassified from accumulated other comprehensive income (loss)	(81		)	—		(81		)
Other comprehensive income (loss)	(81		)	3,947		3,866
Accumulated other comprehensive income (loss) at June 30, 2018	$	6,222		$	20,163	$	26,385

	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