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Balance Sheet Details - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2022	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [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_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration