Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2013

Computation of basic and diluted earnings per share

The following table summarizes the computation of basic and diluted EPS:



	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2013			2012			2013			2012
	(In thousands, except per share data)
Net income attributable to Amkor	$	29,727		$	581		$	43,109		$	12,355
Income allocated to participating securities	(251		)	(2		)	(374		)	(33		)
Net income available to Amkor common stockholders	29,476			579			42,735			12,322
Adjustment for dilutive securities on net income:
Net income reallocated to participating securities	58			2			80			33
Interest on 6.0% convertible notes due 2014, net of tax	3,609			—			7,626			—
Net income attributable to Amkor — diluted	$	33,143		$	581		$	50,441		$	12,355

Weighted average shares outstanding — basic	160,886			165,956			156,672			166,911
Effect of dilutive securities:
Stock options and restricted share awards	10			53			14			101
6.0% convertible notes due 2014	74,215			—			78,413			—
Weighted average shares outstanding — diluted	235,111			166,009			235,099			167,012
Net income attributable to Amkor per common share:
Basic	$	0.18		$	—		$	0.27		$	0.07
Diluted	0.14			—			0.21			0.07

Antidilutive effect of potential shares of common stock that were excluded from diluted earnings per share

The following table summarizes the potential shares of common stock that were excluded from diluted EPS, because the effect of including these potential shares was antidilutive:



	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2013	2012	2013	2012
	(In thousands)
Stock options and restricted share awards	4,092	4,737	4,165	4,506
6.0% convertible notes due 2014	—	82,658	—	82,658
Total potentially dilutive shares	4,092	87,395	4,165	87,164