Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 636,007	$ 413,048
Restricted cash	2,681	2,680
Accounts receivable:
Trade, net of allowances	411,699	389,699
Other	4,463	13,098
Inventories	231,974	227,439
Other current assets	50,331	45,444
Total current assets	1,337,155	1,091,408
Property, plant and equipment, net	1,885,203	1,819,969
Intangibles, net	5,009	4,766
Investments	103,308	38,690
Restricted cash	2,209	2,308
Other assets	83,449	68,074
Total assets	3,416,333	3,025,215
Current liabilities:
Short-term borrowings and current portion of long-term debt	56,350	0
Trade accounts payable	499,508	439,663
Accrued expenses	217,845	212,964
Total current liabilities	773,703	652,627
Long-term debt	1,519,661	1,320,000
Long-term debt, related party	75,000	225,000
Pension and severance obligations	137,115	139,379
Other non-current liabilities	10,855	21,415
Total liabilities	2,516,334	2,358,421
Commitments and contingencies (Note 16)
Amkor stockholders’ equity:
Preferred stock, $0.001 par value, 10,000 shares authorized, designated Series A, none issued
Common stock, $0.001 par value, 500,000 shares authorized, 261,835 and 197,709 shares issued, and 216,486 and 152,397 shares outstanding, in 2013 and 2012, respectively	262	198
Additional paid-in capital	1,810,295	1,614,143
Accumulated deficit	(713,535)	(756,644)
Accumulated other comprehensive income	4,307	11,241
Treasury stock, at cost, 45,349 and 45,312 shares in 2013 and 2012, respectively	(211,155)	(210,983)
Total Amkor stockholders’ equity	890,174	657,955
Noncontrolling interests in subsidiaries	9,825	8,839
Total equity	899,999	666,794
Total liabilities and equity	$ 3,416,333	$ 3,025,215