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Balance Sheet Details - Additional Information (Details) - USD ($) $ in Thousands | 1 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2022 | Jun. 30, 2022 | Jun. 30, 2021
Balance Sheet Related Disclosures [Abstract] |  |  |
Proceeds loaned under notes receivable | $ 10,000 | $ 10,000 | $ 0
Repayments of notes receivable due to the company annually |  | $ 2,000 |

X
- Definition Proceeds Loaned Under Notes Receivable + References No definition available. + Details
Name: | mxl_ProceedsLoanedUnderNotesReceivable
Namespace Prefix: | mxl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Repayments of Notes Receivable Due to the Company Annually + References No definition available. + Details
Name: | mxl_RepaymentsOfNotesReceivableDueToTheCompanyAnnually
Namespace Prefix: | mxl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BalanceSheetRelatedDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration