Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 628,585	$ 610,442
Restricted cash	2,681	2,681
Accounts receivable, net of allowances	406,797	385,542
Inventories	197,297	200,423
Other current assets	45,399	33,328
Total current assets	1,280,759	1,232,416
Property, plant and equipment, net	2,033,396	2,006,553
Investments	114,119	105,214
Restricted cash	2,193	2,234
Other assets	72,872	80,881
Total assets	3,503,339	3,427,298
Current liabilities:
Short-term borrowings and current portion of long-term debt	66,350	61,350
Trade accounts payable	416,789	365,334
Accrued expenses	258,558	264,252
Total current liabilities	741,697	690,936
Long-term debt	1,511,252	1,516,390
Long-term debt, related party	75,000	75,000
Pension and severance obligations	168,020	165,073
Other non-current liabilities	16,010	14,959
Total liabilities	2,511,979	2,462,358
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, 262,251 and 262,109 shares issued, and 216,821 and 216,702 shares outstanding, in 2014 and 2013, respectively	262	262
Additional paid-in capital	1,813,940	1,812,530
Accumulated deficit	(626,715)	(647,348)
Accumulated other comprehensive income (loss)	3,694	(255)
Treasury stock, at cost, 45,430 and 45,407 shares in 2014 and 2013, respectively	(211,571)	(211,449)
Total Amkor stockholders’ equity	979,610	953,740
Noncontrolling interests in subsidiaries	11,750	11,200
Total equity	991,360	964,940
Total liabilities and equity	$ 3,503,339	$ 3,427,298