Accrued settlement costs, current

No definition available.

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- Definition

Accrued settlement costs, noncurrent

+ References

No definition available.

+ Details

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- Definition

Accrued settlement cost, unamortized interest

+ References

No definition available.

+ Details

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- Definition

Number of Quarterly Settlement Payments

+ References

No definition available.

+ Details

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

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Period Type:	duration

- Details

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Commitments and Contingencies (Details) (USD $)	1 Months Ended	2 Months Ended	3 Months Ended
Commitments and Contingencies (Details) (USD $)	Jan. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Loss Contingencies [Line Items]
Estimated Litigation Liability, Current		$ 31,006,000amkr_Accruedsettlementcostscurrent	$ 32,414,000amkr_Accruedsettlementcostscurrent
Tessera Inc Legal Proceedings [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount	155,000,000	145,300,000
Number of Quarterly Settlement Payments	16
Litigation Settlement, Expense			87,100,000
Estimated Litigation Liability, Current		31,000,000
Estimated Litigation Liability, Noncurrent		98,500,000
Accrued settlement cost, unamortized interest		15,800,000
Cost of Sales [Member] \| Tessera Inc Legal Proceedings [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Expense			75,300,000
Interest Expense [Member] \| Tessera Inc Legal Proceedings [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Expense			11,800,000
Letter of Credit [Member]
Loss Contingencies [Line Items]
Credit facility, borrowing capacity		25,000,000
Available letter of credit subfacility utilized		400,000
$200 million revolving credit facility, LIBOR plus 1.25%-1.75%, due December 2019 \| Line of Credit [Member] \| Revolving Credit Facility [Member]
Loss Contingencies [Line Items]
Credit facility, borrowing capacity		$ 200,000,000