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Concentrations - Additional Information (Details)	Mar. 31, 2025 Entity
Risks and Uncertainties [Abstract]
Number of financial institution	2
Concentration risk, threshold percentage	10.00%

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- Definition

Concentration risk threshold percentage.

+ References

No definition available.

+ Details

Name:	mchx_ConcentrationRiskThresholdPercentage
Namespace Prefix:	mchx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

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- Definition

The number of financial institutions.

+ References

No definition available.

+ Details

Name:	mchx_NumberOfFinancialInstitutions
Namespace Prefix:	mchx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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