Document Information [Table]
Document Information, Document [Axis]
Document Information, Document [Axis]
Document [Domain]
Document [Domain]
Document Information [Line Items]
Document Information [Line Items]
Document and Entity Information [Abstract]
Document And Entity Information.
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Document Type
Document Type
Document Period End Date
Document Period End Date
Amendment Flag
Amendment Flag
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Entity Voluntary Filers
Entity Voluntary Filers
Entity Current Reporting Status
Entity Current Reporting Status
Entity Filer Category
Entity Filer Category
Entity Public Float
Entity Public Float
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Statement of Cash Flows [Abstract]
Statement [Table]
Statement [Table]
Statement, Scenario [Axis]
Statement, Scenario [Axis]
Scenario, Unspecified [Domain]
Scenario, Unspecified [Domain]
Statement [Line Items]
Statement [Line Items]
Non cash investing and financing activities:
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Interest rate of convertible subordinated notes
Debt Conversion, Converted Instrument, Rate
Statement of Financial Position [Abstract]
Amkor stockholders' equity:
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock designated Series A, par value
Preferred Stock, Par or Stated Value Per Share
Preferred stock designated Series A, shares authorized
Preferred Stock, Shares Authorized
Preferred stock designated Series A, shares issued
Preferred Stock, Shares Issued
Common stock, par value
Common Stock, Par or Stated Value Per Share
Common stock, shares authorized
Common Stock, Shares Authorized
Common stock, shares issued
Common Stock, Shares, Issued
Common stock, shares outstanding
Common Stock, Shares, Outstanding
Treasury stock, shares
Treasury Stock, Shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected life
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term
Risk-free interest rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Volatility
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Dividend yield
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Weighted average grant date fair value per option granted
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Earnings Per Share [Abstract]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis]
Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Stock Options [Member]
Stock Options [Member]
Convertible Notes Due 2011 [Member]
Convertible Notes Due 2011 [Member]
convertible notes due 2011.
Convertible Notes Due 2013 [Member]
Convertible Notes Due 2013 [Member]
convertible notes due 2013.
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive shares
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Equity [Abstract]
Treasury Stock
Treasury Stock [Text Block]
Compensation and Retirement Disclosure [Abstract]
Schedule of Defined Benefit Plans Disclosures [Table]
Schedule of Defined Benefit Plans Disclosures [Table]
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis]
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis]
Defined Benefit Plans and Other Postretirement Benefit Plans [Domain]
Defined Benefit Plans and Other Postretirement Benefit Plans [Domain]
Other Postretirement Benefit Plans, Defined Benefit [Member]
Other Postretirement Benefit Plans, Defined Benefit [Member]
Foreign Pension Plans [Member]
Foreign Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Service cost
Defined Benefit Plan, Service Cost
Interest cost
Defined Benefit Plan, Interest Cost
Expected return on plan assets
Defined Benefit Plan, Expected Return on Plan Assets
Amortization of transitional obligation
Defined Benefit Plan, Amortization of Transition Obligations (Assets)
Amortization of prior service cost
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Recognized actuarial loss (gain)
Defined Benefit Plan, Actuarial Net (Gains) Losses
Net periodic pension cost
Defined Benefit Plan, Net Periodic Benefit Cost
Curtailments
Defined Benefit Plan, Curtailments
Settlements
Defined Benefit Plan, Settlements, Benefit Obligation
Total Pension Expense
Pension Expense
Cash flows from operating activities:
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Depreciation and amortization
Depreciation, Depletion and Amortization
Loss on debt retirement, net
Gains Losses On Extinguishment Of Debt Attributable To Financing Activities
Amount represents the difference between the fair value of the payments made related to financing activities and the carrying amount of the debt at the time of its extinguishment.
Other operating activities and non-cash items
Other Noncash Income (Expense)
Changes in assets and liabilities
Increase (Decrease) in Operating Capital
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Cash flows from investing activities:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchases of property, plant, and equipment
Payments to Acquire Property, Plant, and Equipment
Proceeds from the sale of property, plant and equipment
Proceeds from Sale of Property, Plant, and Equipment
Financing lease payment from unconsolidated affiliate
Financing lease payment from unconsolidated affiliate
Cash proceeds received during the period for direct financing lease to unconsolidated affiliate.
Other investing activities
Payments for (Proceeds from) Other Investing Activities
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Cash flows from financing activities:
Net Cash Provided by (Used in) Financing Activities [Abstract]
Borrowings under revolving credit facilities
Proceeds from Lines of Credit
Payments under revolving credit facilities
Repayments of Lines of Credit
Proceeds from issuance of short-term working capital facility
Proceeds from Other Short-term Debt
Payments of short-term working capital facility
Repayments of Other Short-term Debt
Proceeds from issuance of long-term debt
Proceeds from Issuance of Other Long-term Debt
Proceeds from issuance of long-term debt, related party
Proceeds from Related Party Debt
Payments of long-term debt, net of certain redemption premiums and discounts
Repayments of Long-term Debt
Payments for debt issuance costs
Payments of Debt Issuance Costs
Payments for repurchase of common stock
Payments for Repurchase of Common Stock
Proceeds from issuance of stock through share-based compensation plans
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options
Payments of tax withholding for restricted shares
Payments Related to Tax Withholding for Share-based Compensation
Net cash provided by (used in) financing activities
Net Cash Provided by (Used in) Financing Activities
Effect of exchange rate fluctuations on cash and cash equivalents
Effect of Exchange Rate on Cash and Cash Equivalents
Net increase in cash and cash equivalents
Cash and Cash Equivalents, Period Increase (Decrease)
Cash and cash equivalents, beginning of period
Cash and Cash Equivalents, at Carrying Value
Cash and cash equivalents, end of period
Supplemental disclosures of cash flow information:
Supplemental Cash Flow Information [Abstract]
Cash paid during the period for:
Cash Paid During Period For Abstract
Cash Paid During Period For
Interest
Interest Paid
Income taxes
Income Taxes Paid
Non cash investing and financing activities:
Noncash Investing and Financing Items [Abstract]
Common stock issuance for conversion of related party 6.25% convertible subordinated notes due December 2013
Debt Conversion, Converted Instrument, Amount
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets
Intangible Assets Disclosure [Text Block]
Class of Treasury Stock [Table]
Class of Treasury Stock [Table]
Equity, Class of Treasury Stock [Axis]
Equity, Class of Treasury Stock [Axis]
Class of Treasury Stock [Domain]
Class of Treasury Stock [Domain]
Stock Repurchase Program [Member]
Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount
Stock Repurchase Program, Authorized Amount
Treasury Stock, Shares, Acquired
Treasury Stock, Shares, Acquired
Treasury Stock, Value, Acquired, Cost Method
Treasury Stock, Value, Acquired, Cost Method
Share Repurchase Program Commission Incurred
Share Repurchase Program Commission Incurred
Share Repurchase Program Commission Incurred
Treasury Stock Acquired, Average Cost Per Share
Treasury Stock Acquired, Average Cost Per Share
Stock Repurchase Program, Remaining Authorized Repurchase Amount
Stock Repurchase Program, Remaining Authorized Repurchase Amount
Other Accrued Liabilities, Current
Other Accrued Liabilities, Current
Shares Paid for Tax Withholding for Share Based Compensation
Shares Paid for Tax Withholding for Share Based Compensation
Adjustments Related to Tax Withholding for Share-based Compensation
Adjustments Related to Tax Withholding for Share-based Compensation
Inventory Disclosure [Abstract]
Inventories
Schedule of Inventory, Current [Table Text Block]
Fair Value Disclosures [Abstract]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table]
Fair Value, Hierarchy [Axis]
Fair Value, Hierarchy [Axis]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Total
Estimate of Fair Value, Fair Value Disclosure [Member]
Quoted Prices in Active Markets for Identical Assets
Fair Value, Inputs, Level 1 [Member]
Significant Other Observable Inputs
Fair Value, Inputs, Level 2 [Member]
Significant Unobservable Inputs
Fair Value, Inputs, Level 3 [Member]
Fair Value by Measurement Frequency [Axis]
Fair Value by Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurements, Recurring [Member]
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value assets measured on recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Cash equivalent money market funds
Cash and Cash Equivalents, Fair Value Disclosure
Restricted cash
Restricted Cash Fair Value Disclosure
Restricted Cash Fair Value Disclosure
Investments, All Other Investments [Abstract]
Current (Other accounts receivable)
Capital Leases, Lessor Balance Sheet, Net Investment in Direct Financing Leases, Current
Non-current (Other assets)
Capital Leases, Lessor Balance Sheet, Net Investment in Direct Financing Leases, Noncurrent
Total lease receivable, net
Capital Leases, Net Investment in Direct Financing Leases
Income Tax Disclosure [Abstract]
Income Taxes
Income Tax Disclosure [Text Block]
Valuation of money market funds and restricted cash using quoted market prices in active markets for identical assets
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Financial instruments that are not recorded at fair value
Schedule Of Fair Value Carrying Value Debt [Table Text Block]
Schedule Of Fair Value Carrying Value Debt [Table Text Block]
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Related Costs [Table]
Schedule of Restructuring and Related Costs [Table]
Restructuring Cost and Reserve [Axis]
Restructuring Cost and Reserve [Axis]
Type of Restructuring [Domain]
Type of Restructuring [Domain]
Philipines Manufacturing Operations [Member]
Philipines Manufacturing Operations [Member]
Singapore Manufacturing Operations [Member]
Singapore Manufacturing Operations [Member]
Singapore Manufacturing Operations [Member]
Restructuring and Related Cost by Location of Income Statement [Axis]
Restructuring and Related Cost by Location of Income Statement [Axis]
Restructuring and Related Cost by Location of Income Statement [Axis]
Restructuring and Related Cost by Location of Income Statement [Domain]
Restructuring and Related Cost by Location of Income Statement [Domain]
Restructuring and Related Cost by Location of Income Statement [Domain]
Cost of sales [Member]
Cost of Sales [Member]
Selling, general and administrative expenses [Member]
Selling General and Administrative [Member]
selling general and administrative [Member]
Restructuring Cost and Reserve [Line Items]
Selling and Marketing Expense
Selling and Marketing Expense
General and Administrative Expense
General and Administrative Expense
Severance costs
Severance Costs
Asset retirement obligation related to the leased property
Asset Retirement Obligation
Cash received for sale of facility in Singapore
Proceeds from Divestiture of Businesses
Number of employees affected due to restructuring activities
Restructuring and Related Cost, Expected Number of Positions Eliminated
Defined Benefit Plan Curtailment And Settlement
Defined Benefit Plan Curtailment And Settlement
Defined Benefit Plan Curtailment And Settlement
Gain on sale of business
Gain On Sale Of business
Gain On Sale Of business
Asset impairment cost
Asset Impairment Charges
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Statement, Business Segments [Axis]
Statement, Business Segments [Axis]
Segment [Domain]
Segment [Domain]
Packaging [Member]
Packaging [Member]
Packaging.
Test [Member]
Test [Member]
Test.
Other [Member]
All Other Segments [Member]
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Net sales
Revenue, Net
Gross profit
Gross Profit
Property, plant and equipment, gross
Property, Plant and Equipment, Gross
Number of reportable segments
Number Of Reportable Segments
Number of reportable segments.
Commitments and Contingencies Disclosure [Abstract]
Loss Contingencies [Table]
Loss Contingencies [Table]
Loss Contingencies By Nature Of Contingency [Axis]
Loss Contingencies by Nature of Contingency [Axis]
Loss Contingency Nature [Domain]
Loss Contingency, Nature [Domain]
Tessera Inc [Member]
Tessera Inc [Member]
Tessera Inc .
Tessera Inc Legal Proceedings [Member]
Tessera Inc Legal Proceedings [Member]
Tessera inc legal proceedings.
Carsem Legal Proceedings [Member]
Carsem Legal Proceedings [Member]
Carsem legal proceedings.
Line of Credit Facility [Axis]
Line of Credit Facility [Axis]
Line of Credit Facility, Lender [Domain]
Line of Credit Facility, Lender [Domain]
Senior Secured Revolving Credit Facility [Member]
Senior Secured Credit Facilities [Member]
Senior secured credit facilities.
Letter of Credit [Member]
Letter of Credit [Member]
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Credit facility, borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Line of Credit Facility, Amount Outstanding
Line of Credit Facility, Amount Outstanding
Credit facility, additional borrowing available
Line of Credit Facility, Remaining Borrowing Capacity
Final damages awarded
Litigation Settlement, Gross
Final award, plus interest and royalties
Litigation Settlement, Expense
Additional royalties claimed by Tessera for packages
Additional Royalties Claimed
Additional Royalties Claimed.
Unpaid Amount of Royalties
Unpaid Amount Of Royalties
Unpaid Amount Of Royalties.
Royalties owed net of offsets
Royalties Owed Net Of Offsets
Royalties owed net of offsets.
Amount of dispute
Loss Contingency, Estimate of Possible Loss
Royalties Claimed Under License Agreement For Additional Patents
Royalties Claimed Under License Agreement For Additional Patents
Royalties Claimed Under License Agreement For Additional Patents.
Amount of deposit in escrow account
Escrow Deposit
Number of valid asserted patent claims
Loss Contingency, Pending Claims, Number
Number of foreign patents
Number of foreign patents
Number of foreign patents.
Number of domestic patents
Number Of Domestic Patents
Number of domestic patents.
Number of U.S patents under license agreement
Number Of domestic Patents Under License Agreement
Number Of domestic patents under license agreement.
Number of foreign patents under license agreement
Number of foreign patents under license agreement
Number of foreign patents under license agreement.
Number of patents on which claim is dropped
Number of patents on which claim is dropped
Number of patents on which claim is dropped.
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis]
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis]
Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain]
Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain]
Stock options [Member]
Employee stock option [Member]
Employee Stock Option [Member]
Restricted shares [Member]
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Unrecognized compensation expense from Restricted Stock
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized
Restricted shares granted to employees under the 2007 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Weighted-average period of recognition of unrecognized compensation expense
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition
Fair value of shares upon vesting
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value
Intrinsic value of options exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value
Cash received for stock option exercises
Tax benefits realized
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options
Cost of shares withheld to satisfy tax withholding obligations
Share Based Compensation Arrangement By Share Based Payment Award Cost Of Shares Withheld To Satisfy Tax Withholding Obligations
Share Based Compensation Arrangement By Share Based Payment Award Cost Of Shares Withheld To Satisfy Tax Withholding Obligations
Components of net periodic pension cost
Schedule of Net Benefit Costs [Table Text Block]
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment [Table]
Schedule of Property, Plant and Equipment [Table]
Property, Plant and Equipment by Type [Axis]
Property, Plant and Equipment by Type [Axis]
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Type [Domain]
Land [Member]
Land [Member]
Land use rights [Member]
Land Use and Rights [Member]
Land Use and Rights [Member]
Buildings and improvements [Member]
Building and Building Improvements [Member]
Machinery and equipment [Member]
Machinery and Equipment [Member]
Software and computer equipment [Member]
Software and Computer Equipment [Member]
Software and Computer Equipment [Member]
Furniture, fixtures and other equipment [Member]
Furniture and Fixtures [Member]
Construction in progress [Member]
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Less accumulated depreciation and amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Total property, plant and equipment, net
Property, Plant and Equipment, Net
Inventories
Inventory, Net, Combining Work in Process and Raw Materials Alternative [Abstract]
Raw materials and purchased components
Inventory, Raw Materials, Net of Reserves
Work-in-process
Inventory, Work in Process, Net of Reserves
Total inventories
Inventory, Net
Payables and Accruals [Abstract]
Summarized Accrued expenses
Schedule of Accrued Liabilities [Table Text Block]
Impairment losses on property, plant, and equipment included in cost of sales
Impairment of Long-Lived Assets Held-for-use
Equity and Comprehensive Income
Stockholders' Equity Note Disclosure [Text Block]
Earnings Per Share
Earnings Per Share [Text Block]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis]
Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis]
Fair Value, Disclosure Item Amounts [Domain]
Fair Value, Disclosure Item Amounts [Domain]
Carrying value of debt [Member]
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair value of debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, Long-term and Short-term, Combined Amount, Total
Debt, Long-term and Short-term, Combined Amount
Summary of all common stock option activity
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Number of Shares Outstanding beginning balance
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Weighted Average Exercise Price Per Share Outstanding beginning balance
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Number of Shares Granted
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures
Weighted Average Exercise Price Per Share Granted
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Number of Shares Exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Weighted Average Exercise Price Per Share Exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Number of Shares Forfeited or expired
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period
Weighted Average Exercise Price Per Share Forfeited or expired
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price
Number of Shares Outstanding ending balance
Weighted Average Exercise Price Per Share Outstanding ending balance
Weighted Average Exercise Price Per Share average contractual term
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Aggregate intrinsic value Outstanding ending balance
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
Number of Shares Fully vested and expected to vest
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number
Weighted Average Exercise Price Per Share Fully vested and expected to vest
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price
Average Remaining Contractual Term Fully vested and expected to vest
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term
Aggregate intrinsic value Fully vested and expected to vest
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
Number of Shares Exercisable
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number
Weighted Average Exercise Price Per Share Exercisable
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Average Remaining Contractual Term Exercisable
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Aggregate intrinsic value Exercisable
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value
Related Party Transactions [Abstract]
Schedule of Related Party Transactions, by Related Party [Table]
Schedule of Related Party Transactions, by Related Party [Table]
Legal Entity [Axis]
Entity [Domain]
Acqutek [Member]
Acqutek [Member]
Related Party Transactions, by Related Party [Axis]
Related Party Transactions, by Related Party [Axis]
Related Party [Domain]
Related Party [Domain]
Board of Directors Chairman [Member]
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Related Party Investment, Ownership Percentage
Related Party Investment, Ownership Percentage
Related Party Investment, Ownership Percentage
Payments For Inventory
Payments For Inventory
Purchases Of Inventory In period
Accounts Payable, Current
Accounts Payable, Current
Related Party Percentage Of Ownership Shares Sold
Related Party Percentage Of Ownership Shares Sold
Korean Severance Plan [Member]
Korean Severance Plan [Member]
Korean Severance Plan [Member]
Contributions to pension plans
Defined Benefit Plan, Contributions by Employer
Expected Employer Contribution during remaining part of Year
Defined Benefit Plan Expected Contributions By Employer During Remaining Part of Year
Defined Benefit Plan Expected Contributions By Employer During Remaining Part of Year
Provision for Severance Benefit
Supplemental Postemployment Benefits Severance Expense
Supplemental Postemployment Benefits Severance Expense
Pension and severance obligations
Pension and Other Postretirement and Postemployment Benefit Plans, Liabilities, Noncurrent
Accrued Severance Plan Minimum Service Period
Accrued Severance Plan Minimum Service Period
Accrued Severance Plan Minimum Service Period
Total pension and severance obligations
Pension And Other Postretirement And Postemployment Benefit Plan Liabilities Current And Noncurrent
Pension And Other Postretirement And Postemployment Benefit Plan Liabilities Current And Noncurrent
Share-Based Compensation Plans
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Amortization of identifiable intangible assets
Finite-Lived Intangible Assets, Amortization Expense
Accrued Expenses
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Changes in equity and comprehensive income attributable to both Company and noncontrolling interests
Schedule Of Stockholders Equity And Other Comprehensive Income [Table Text Block]
Schedule Of Stockholders Equity And Other Comprehensive Income [Table Text Block]
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Long-term Debt, Type [Domain]
Senior Notes Due June 2016 [Member]
Senior notes due June 2016
Senior Notes Due May 2018 [Member]
Senior Notes Due May 2018 [Member]
Senior notes.
Senior Notes Due 2021 [Member]
Senior notes due 2021.
Convertible Senior Subordinated Notes Due May 2011 [Member]
Convertible Senior Subordinated Notes Due May 2011 [Member]
Convertible senior subordinated notes.
Convertible Senior Subordinated Notes Due April 2014 [Member]
Convertible Senior Subordinated Notes Due April 2014 [Member]
Convertible senior subordinated notes due April 2014.
Convertible Subordinated Notes Due December 2013 [Member]
Convertible Subordinated Notes Due December 2013 [Member]
Convertible subordinated notes due December 2013.
Term Loan Due April 2014 [Member]
Term loan.
Term Loan Due July 2014 [Member]
Term Loan Due July 2014 [Member]
Term Loan Due May 2013 [Member]
Term Loan Due May 2013 [Member]
Term loan.
Term Loan TIBOR Due September 2012 [Member]
Term Loan TIBOR Due September 2012 [Member]
Term Loan TIBOR.
Term Loan TIBOR Due July 2011 Member
Term Loan Tibor Due July 2011 Member
Term Loan TIBOR.
Term Loan 90 Day Commercial Paper Due April 2015 [Member]
Term loan.
Term Loan Bank Sinking Fund Due Mar 2016 [Member]
Term Loan Bank Sinking Fund Due Mar 2016 [Member]
Secured Equipment and Property Financing [Member]
Secured Equipment and Property Financing [Member]
Working Capital Facility Due January 2011 [Member]
Working capital facility.
Working Capital Facility Due January 2012 And April 2012 Member
Working capital facility due January 2012 and April 2012.
Revolving credit facilities [Member]
Line of Credit [Member]
$100 million revolving credit facility, LIBOR plus 2.25%-2.75%, due April 2015 [Member]
Legal Entity [Axis]
Entity [Domain]
Subsidiaries [Member]
Related Party [Member]
Related Party.
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Senior notes
Senior Notes
Convertible subordinated notes
Convertible Subordinated Debt
Term Loan for subsidiaries
Loans Payable
Secured equipment and property financing
Secured Debt
Borrowing under senior secured credit facility
Less: Short-term borrowings and current portion of long-term debt
Debt, Current
Long-term debt (including related party)
Non Current Long term Debt Including Related Party
Non current long-term debt including related party.
Summary of Short term Borrowings And Long term Debt
Schedule of Debt [Table Text Block]
Investments
Investments and Other Noncurrent Assets [Text Block]
Computation of basic and diluted earnings per share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Antidilutive effect of potential shares of common stock that were excluded from diluted earnings per share
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Summary of Property, plant and equipment
Property, Plant and Equipment [Table Text Block]
Reconciliation of property, plant and equipment
Schedule Of Property Plant And Equipment Balance Sheet To Cash Flow Reconciliation [Table Text Block]
Schedule Of Property Plant And Equipment Balance Sheet To Cash Flow Reconciliation [Table Text Block]
Dilutive Securities Adjustments [Table]
Dilutive Securities Adjustments [Table]
Dilutive Securities Adjustments.
Convertible Notes Due 2011 [Member]
Convertible Notes Due 2013 [Member]
Convertible Notes Due 2014 [Member]
Convertible Notes Due 2014 [Member]
convertible notes due 2014.
Dilutive Securities Adjustments [Line Items]
Dilutive Securities Adjustments [Line Items]
Dilutive Securities Adjustments.
Net income attributable to Amkor
Net Income (Loss) Attributable to Parent
Income Allocated To Participating Securities Basic
Income Allocated To Participating Securities Basic
Income allocated to participating securities basic.
Net income available to Amkor common stockholders
Net Income (Loss) Available to Common Stockholders, Basic
Adjustment for dilutive securities on net income:
Adjustment For Dilutive Securities On Net Income Abstract
Adjustment for dilutive securities on net income.
Undistributed Earnings, Basic
Undistributed Earnings, Basic
Interest on convertible notes due, net of tax
Interest on Convertible Debt, Net of Tax
Net income attributable to Amkor-diluted
Net Income (Loss) Available to Common Stockholders, Diluted
Weighted average shares outstanding-basic
Weighted Average Number of Shares Outstanding, Basic
Effect of dilutive securities:
Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract]
Stock options
Incremental Common Shares Attributable To Stock Options
Incremental Common Shares Attributable To Stock options.
Unvested restricted shares
Incremental Common Shares Attributable To Unvested Restricted Shares
Incremental Common Shares Attributable To Unvested restricted shares.
Convertible notes due
Incremental Common Shares Attributable to Conversion of Debt Securities
Weighted average shares outstanding-diluted
Weighted Average Number of Shares Outstanding, Diluted
Net income attributable to Amkor per common share:
Earnings Per Share, Basic and Diluted [Abstract]
Basic
Earnings Per Share, Basic
Diluted
Earnings Per Share, Diluted
Debt Instrument, Interest Rate, Stated Percentage
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Line of Credit Facility [Table]
Line of Credit Facility [Table]
Working capital facility Due January 2012 and April 2012 [Member]
Working Capital Facility Due January 2013 [Member]
Working Capital Facility Due January 2013 [Member]
Working Capital Facility Due January 2013.
Letter of Credit [Member]
ATK Loan [Member]
ATK Loan [Member]
Secured Debt [Member]
Korean Subsidiary [Member]
Korean subsidiary member.
Chinese Subsidiary [Member]
Chinese subsidiary.
Taiwan Subsidiaries [Member]
Taiwan Subsidiaries [Member]
Taiwan subsidiaries.
Range [Axis]
Range [Domain]
Minimum [Member]
Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility [Line Items]
Credit Facility (Textuals) [Abstract]
Credit Facility (Textuals) [Abstract]
Credit Facility.
Credit facility, interest rate description
Secured Term Loan Agreement By Subsidiary Interest Rate
Secured term loan agreement by subsidiary interest rate.
Line of Credit Facility, Interest Rate Description
Line of Credit Facility, Interest Rate Description
Interest rate at period end
Line of Credit Facility, Interest Rate at Period End
Available Letter Of Credit Subfacility Utilized
Available Letter Of Credit Subfacility Utilized
Available letter of credit sub-facility utilized.
Description of borrowing base of revolving credit facility
Line of Credit Facility, Collateral
Maturity period of working capital facility
Line of Credit Facility, Expiration Date
Debt Instruments [Abstract]
Debt Instrument Term
Debt Instrument Term
Interest rate on convertible notes due
Convertible senior subordinated notes due to related party
Due to Related Parties, Noncurrent
Debt, interest rate terms
Debt Instrument, Interest Rate Terms
Loss on extinguishment related to premiums and fees paid for the tender of the 2016 Notes
Gains (Losses) on Extinguishment of Debt, before Write off of Deferred Debt Issuance Cost
Unamortized deferred debt
Unamortized deferred debt
Unamortized deferred debt.
Additional interest on the notes
Debt Instrument Additional Interest Rate Stated Percentage
Debt Instrument Additional Interest Rate Stated Percentage.
Term loan with Taiwanese Bank due April 2015 and Term Loan with Woori Bank for 12 months
Term Loan Arrangement By Subsidiary
Term loan arrangement by subsidiary.
Principal repayment
Debt Instrument, Periodic Payment, Principal
Remaining Principal Repayment
Remaining Principal Repayment To Be Paid On Maturity
Remaining principal repayment to be paid on maturity.
Principal Amount of Notes To Be Purchased by Related Party
Principal Amount of Notes To Be Purchased by Related Party
Principal amount of notes to be purchased by related party.
Principal amount of Convertible Subordinated Notes due 2021 owned by Executive Chairman of Board of Directors and largest shareholder
Debt Instrument, Face Amount
Debt issuance costs incurred in association with 2018 Notes
Debt Related Commitment Fees and Debt Issuance Costs
Outstanding principal amount of 2016 notes redeemed
Debt Tender Offer Principal Amount
Debt tender offer principal amount.
Charge for write-off of associated unamortized deferred debt issuance costs
Write off of Deferred Debt Issuance Cost
Interest rate
Debt Instrument, Interest Rate at Period End
Notes converted into common stock shares
Stock Issued During Period, Shares, Conversion of Convertible Securities
Penalty Of Additional Interest Will Be Charged For Failure To Effect Exchange Offer
Penalty of additional interest will be charged for failure to effect exchange offer.
Repayment of senior debt
Repayments of Senior Debt
Secured Term Loan
Secured Term Loan Agreement By Subsidiary
Secured term loan agreement by subsidiary.
Amount outstanding under the facility
Secured Long-term Debt, Noncurrent
Debt amount purchased during call
Payment For Note Purchased Called For Redemption
Payment for note purchased called for redemption.
Forfeited Accrued Interest
Forfeited Accrued Interest
Forfeited accrued interest.
Debt Instrument Face Amount Related Party
Debt Instrument Face Amount Related Party
Debt (Textuals) [Abstract]
Debt.
Purchase of 2016 Notes
Debt Tender Amount Purchased
Debt tender amount purchased.
Gain or loss as a result of conversion
Gain Loss From Conversion
Gain or loss as a result of conversion.
Unamortized deferred debt cost
Unamortized Debt Issuance Expense
Schedule of Investments [Table]
Investment [Axis]
Investment [Domain]
One Year from Balance Sheet Date [Member]
More than Two and within Three Years from Balance Sheet Date [Member]
More than Three and within Four Years from Balance Sheet Date [Member]
Schedule of Investments [Line Items]
Percentage of ownership held by Existing Holder
Percentage Of Ownership Held By Existing Holder
Percentage Of Ownership Held By Existing Holder
Percentage of ownership held by Company or equity interest
Equity Method Investment, Ownership Percentage
Percentage of ownership held by Joint Venturer
Percentage Of Ownership Held By Joint Venturer
Percentage Of Ownership Held By Joint Venturer
Equity in earnings of unconsolidated affiliate
Income (Loss) from Equity Method Investments
Interest income recognized
Capital Leases Income Statement Direct Financing Lease Interest Income
Capital Leases Income Statement Direct Financing Lease Interest Income
Maximum ownership ratio of call options
Maximum Ownership Ratio Of Call Options
Maximum Ownership Ratio Of Call Options
Lease Cancellation Amount
Lease Cancellation Amount
Lease Cancellation Amount
Schedule of Stockholders Equity and Comprehensive Income [Table]
Schedule of Stockholders Equity and Comprehensive Income [Table]
Schedule of Stockholders Equity and Comprehensive Income [Table]
Statement, Equity Components [Axis]
Statement, Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Amkor [Member]
Parent [Member]
Noncontrolling Interest [Member]
Noncontrolling Interest [Member]
Schedule of Stockholders Equity and Comprehensive Income [Line Items]
Schedule of Stockholders Equity and Comprehensive Income [Line Items]
Schedule of Stockholders Equity and Comprehensive Income [Line Items]
Equity, Beginning balance
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Comprehensive income:
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Other comprehensive income:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Pension liability adjustment, net of tax
Other Comprehensive Income (Loss), Minimum Pension Liability Net Adjustment, Net of Tax
Adjustments to unrealized components of defined benefit pension plan, net of tax
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax
Cumulative translation adjustment
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Total other comprehensive income
Other Comprehensive Income (Loss), Net of Tax
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Treasury stock acquired through surrender of shares for tax withholding
Issuance of stock through employee share-based compensation plans
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures
Share-based compensation expense
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition
Repurchase of Common Stock
Stock Repurchased During Period, Value
Conversion of debt to common stock
Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments
Equity, Ending balance
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation
Basis Of Presentation [Policy Text Block]
Basis Of Presentation [Policy Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Carrying Value
Equity Method Investments
Ownership Percentage
Property, plant and equipment additions
Property, Plant and Equipment, Additions
Net change in related accounts payable and deposits
Net Change In Related Accounts Payable And Deposits
Net Change In Related Accounts Payable And Deposits
Purchases of property, plant, and equipment
Schedule of Finite-Lived Intangible Assets by Major Class [Table]
Schedule of Finite-Lived Intangible Assets by Major Class [Table]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Patents and technology rights [Member]
Patents and Technology Rights [Member]
Patents and Technology Rights [Member]
Customer relationships [Member]
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net [Abstract]
Finite-Lived Intangible Assets, Net [Abstract]
Gross
Finite-Lived Intangible Assets, Gross
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Net
Finite-Lived Intangible Assets, Net
Payroll and benefits
Accrued Employee Benefits, Current
Customer advances and deferred revenue
Deferred Revenue and Credits, Current
Accrued interest
Interest Payable, Current
Accrued severance plan obligations (Note 13)
Supplemental Unemployment Benefits, Severance Benefits
Income taxes payable
Accrued Income Taxes, Current
Other accrued expenses
Total accrued expenses
Accrued Liabilities, Current
Number of Shares Nonvested beginning balance
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Weighted Average Grant-Date Fair Value Nonvested beginning balance
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Number of Shares Awards granted
Weighted Average Grant-Date Fair Value Awards granted
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Number of Shares Awards vested
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Weighted Average Grant-Date Fair Value Awards vested
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Number of Shares Awards forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Weighted Average Grant-Date Fair Value Awards forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Grant Date Fair Value
Number of Shares Nonvested ending balance
Weighted Average Grant-Date Fair Value Nonvested ending balance
Income Statement [Abstract]
Cost of sales
Cost of Goods and Services Sold
Gross profit
Operating expenses:
Operating Expenses [Abstract]
Selling, general and administrative
Selling, General and Administrative Expense
Research and development
Research and Development Expense
Total operating expenses
Operating Expenses
Operating income
Operating Income (Loss)
Other expense (income):
Nonoperating Income (Expense) [Abstract]
Interest expense
Interest Expense
Interest expense, related party
Interest Expense, Related Party
Interest income
Interest Income, Deposits with Financial Institutions
Foreign currency (gain) loss
Foreign Currency Transaction Gain (Loss), before Tax
Loss on debt retirement, net
Gains (Losses) on Extinguishment of Debt
Equity in earnings of unconsolidated affiliate
Other income, net
Other Nonoperating Income (Expense)
Total other expense, net
Nonoperating Income (Expense)
Income tax expense
Income Tax Expense (Benefit)
Net income
Net loss (income) attributable to noncontrolling interests
Net Income (Loss) Attributable to Noncontrolling Interest
Net income attributable to Amkor per common share:
Shares used in computing per common share amounts:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic
Diluted
Inventories
Inventory Disclosure [Text Block]
Pension and Severance Plans
Pension And Severance Plans [Text Block]
Pension And Severance Plans [Text Block]
Employee service share based compensation allocation of recognized period
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
Summary of all common stock option activity
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Assumptions used in valuing the weighted average fair values of the options granted
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Restricted share activity
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
Investments
Schedule of Equity Method Investments [Table Text Block]
Lease receivables
Schedule Of Capital Leases In Financial Statements Of Lessor [Table Text Block]
Schedule Of Capital Leases In Financial Statements Of Lessor [Table Text Block]
Accounting Changes and Error Corrections [Abstract]
New Accounting Standards
Accounting Changes and Error Corrections [Text Block]
Property, Plant And Equipment
Property, Plant and Equipment Disclosure [Text Block]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain]
Research and Development [Member]
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense
Allocated Share-based Compensation Expense, Net of Tax
Summarized financial information concerning reportable segments
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Interim Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Related Party Transactions Disclosure
Related Party Transactions Disclosure [Text Block]
Fair Value Measurements
Fair Value Disclosures [Text Block]
Employee Separation Costs [Member]
Employee Severance [Member]
Contractual Obligations [Member]
Contract Termination [Member]
Asset Impairments [Member]
Impairment in Value of Asset [Member]
Restructuring Cost and Reserve [Line Items]
Summary of exit activities and reduction in force initiatives
Restructuring Reserve [Roll Forward]
Accrual, Beginning balance
Restructuring Reserve
Charges
Restructuring Reserve, Period Expense
Cash Payments
Restructuring Reserve, Settled with Cash
Non-cash Amounts
Restructuring Reserve, Settled without Cash
Accrual, Ending balance
2011 Remaining
Future Amortization Expense, Remainder of Fiscal Year
2012
Future Amortization Expense, Year Two
2013
Future Amortization Expense, Year Three
2014
Future Amortization Expense, Year Four
2015
Future Amortization Expense, Year Five
Thereafter
Future Amortization Expense, after Year Five
Total amortization
Finite-Lived Intangible Assets, Future Amortization Expense
Debt
Debt Disclosure [Text Block]
Business Segments
Segment Reporting Disclosure [Text Block]
Operating Loss Carryforwards [Table]
Operating Loss Carryforwards [Table]
Income Tax Authority [Axis]
Income Tax Authority [Axis]
Income Tax Authority [Domain]
Income Tax Authority [Domain]
U.S. [Member]
Domestic Country [Member]
Non-U.S. [Member]
Foreign Country [Member]
J-Devices [Member]
J Devices [Member]
J Devices [Member]
State Income Taxes [Member]
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards
Operating Loss Carryforwards
Operating loss carryforwards, expiration dates
Operating Loss Carryforwards, Expiration Dates
Deferred taxes on investment
Deferred Income Tax Expense (Benefit)
Deferred taxes on investment on state income taxes
Current State and Local Tax Expense (Benefit)
Income Taxes (Textuals) [Abstract]
Income Taxes Textuals [Abstract]
Income Taxes Textuals [Abstract]
Income tax expense of foreign operations
Foreign Income Tax Expense (Benefit), Continuing Operations
Expense related to foreign withholding taxes
Expense Related To Foreign Withholding Taxes
Expense Related To Foreign Withholding Taxes
Gross unrecognized tax benefits
Unrecognized Tax Benefits
Amount unrecognized tax benefits will decrease by within the next twelve months
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit
Settlement of an uncertain position offset
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities
Increase in reserve resulting from evaluation
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions
ASSETS
Assets [Abstract]
Current assets:
Assets, Current [Abstract]
Cash and cash equivalents
Restricted cash
Restricted Cash and Cash Equivalents, Current
Accounts receivable:
Receivables, Net, Current [Abstract]
Trade, net of allowances
Accounts Receivable, Net, Current
Other
Nontrade Receivables, Current
Inventories
Other current assets
Other Assets, Current
Total current assets
Assets, Current
Property, plant and equipment, net
Intangibles, net
Investments
Restricted cash
Restricted Cash and Cash Equivalents, Noncurrent
Other assets
Other Assets, Noncurrent
Total assets
Assets
LIABILITIES AND EQUITY
Liabilities and Equity [Abstract]
Current liabilities:
Liabilities, Current [Abstract]
Short-term borrowings and current portion of long-term debt
Trade accounts payable
Accrued expenses
Total current liabilities
Liabilities, Current
Long-term debt
Long-term Debt, Excluding Current Maturities
Long-term debt, related party
Other non-current liabilities
Other Liabilities, Noncurrent
Total liabilities
Liabilities
Commitments and contingencies (see Note 16)
Commitments and Contingencies
Equity:
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Preferred stock, $0.001 par value, 10,000 shares authorized, designated Series A, none issued
Preferred Stock, Value, Issued
Common stock, $0.001 par value, 500,000 shares authorized, 197,292 and 183,467 shares issued, and 186,256 and 183,420 shares outstanding, in 2011 and 2010, respectively
Common Stock, Value, Issued
Additional paid-in capital
Additional Paid in Capital
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Accumulated other comprehensive income
Accumulated Other Comprehensive Income (Loss), Net of Tax
Treasury stock, at cost, 11,036 and 47 shares in 2011 and 2010, respectively
Treasury Stock, Value
Total Amkor stockholders' equity:
Stockholders' Equity Attributable to Parent
Noncontrolling interests in subsidiaries
Stockholders' Equity Attributable to Noncontrolling Interest
Total equity
Total liabilities and equity
Liabilities and Equity
Exit Activities and Reductions in Force
Restructuring and Related Activities Disclosure [Text Block]
Summary of exit activities and reduction in force initiatives
Schedule of Restructuring and Related Costs [Table Text Block]
Summary of acquired intangibles
Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block]
Estimated future amortization of intangible assets
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]