Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net sales	$ 655,010	$ 664,950
Cost of sales	550,029	538,264
Gross profit	104,981	126,686
Operating expenses:
Selling, general and administrative	57,255	64,558
Research and development	13,425	12,129
Total operating expenses	70,680	76,687
Operating income	34,301	49,999
Other expense (income):
Interest expense	18,586	18,789
Interest expense, related party	3,492	2,580
Interest income	(889)	(587)
Foreign currency loss	790	1,731
Equity in earnings of unconsolidated affiliate	(1,988)	(1,518)
Other income, net	(634)	(144)
Total other expense, net	19,357	20,851
Income before income taxes	14,944	29,148
Income tax expense	3,362	3,382
Net income	11,582	25,766
Net loss (income) attributable to noncontrolling interests	192	(663)
Net income attributable to Amkor	$ 11,774	$ 25,103
Net income attributable to Amkor per common share:
Basic	$ 0.07	$ 0.13
Diluted	$ 0.06	$ 0.10
Shares used in computing per common share amounts:
Basic	167,866	194,067
Diluted	250,688	277,585