v3.25.2

Cover Page - shares	6 Months Ended
Cover Page - shares	Jun. 30, 2025	Jul. 31, 2025
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2025
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Document Transition Report	false
Entity File Number	001-34791
Entity Registrant Name	Magnachip Semiconductor Corporation
Entity Central Index Key	0001325702
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	83-0406195
Entity Address, Address Line One	c/o Magnachip Semiconductor, Ltd.
Entity Address, Address Line Two	15F, 76 Jikji-daero 436beon-gil
Entity Address, City or Town	Heungdeok-gu
Entity Address, Country	KR
Entity Address, Postal Zip Code	28581
City Area Code	82
Local Phone Number	(2) 6903-3000
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	MX
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		35,924,033

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Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

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Local phone number for entity.

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Title of a 12(b) registered security.

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MAGNACHIP SEMICONDUCTOR Corp 10-Q