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Discontinued Operations - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2025 | Sep. 30, 2025
Discontinued Operation [Line Items] |  |
Termination Charges | $ 6,500 |
Amount Paid For Statutory Severance And Other Employee Related Costs | 6,500 |
Korean Subsidiary [Member] |  |
Discontinued Operation [Line Items] |  |
Sale of EOL Display products and the potential monetization | 20,000 |
Discontinued Operations [Member] |  |
Discontinued Operation [Line Items] |  |
Impairment charges |  | $ 12,424
Minimum [Member] |  |
Discontinued Operation [Line Items] |  |
Estimated Cash Cost Of Liquidation | 12,000 |
Maximum [Member] |  |
Discontinued Operation [Line Items] |  |
Estimated Cash Cost Of Liquidation | $ 15,000 |

X
- Definition Amount paid for statutory severance and other employee related costs. + References No definition available. + Details
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Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
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X
- Definition Discontinued operation. + References No definition available. + Details
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X
- Definition Disposal group including discontinued operation impairment charges. + References No definition available. + Details
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- Definition Termination charges. + References No definition available. + Details
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- Definition Amount of currency on hand, demand deposits with banks or financial institutions, and other kinds of accounts that have the general characteristics of demand deposits, held by a disposal group. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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